ï»??xml version="1.0" encoding="utf-8" standalone="yes"?>国产在线精品免费av,日韩精品一区二区三区免费观看,日本美女视频一区二区http://www.aygfsteel.com/sunfruit/category/7558.html--我相信JAVA能走得更˜q?QQ:316228067zh-cnSun, 23 Mar 2008 09:10:52 GMTSun, 23 Mar 2008 09:10:52 GMT60- Swift GIS--½E›_®šã€è‡ªä¸…R€é«˜æ•?/title><link>http://www.aygfsteel.com/sunfruit/archive/2008/03/21/187758.html</link><dc:creator>sunfruit</dc:creator><author>sunfruit</author><pubDate>Fri, 21 Mar 2008 09:48:00 GMT</pubDate><guid>http://www.aygfsteel.com/sunfruit/archive/2008/03/21/187758.html</guid><wfw:comment>http://www.aygfsteel.com/sunfruit/comments/187758.html</wfw:comment><comments>http://www.aygfsteel.com/sunfruit/archive/2008/03/21/187758.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/sunfruit/comments/commentRss/187758.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/sunfruit/services/trackbacks/187758.html</trackback:ping><description><![CDATA[<script src="http://221.122.41.10/rmcomserver/ltmap/ltmap.js"></script><script type="text/javascript">
var initMap;
var mapListener = new MapListener();
mapListener.onClick = function(geoPoint){
//业务
//pointId, geoPoint, color, size, opacity, caption, captionFontColor, captionBgColor, captionOpacity){
var p = new Point(1, geoPoint, '#0000ff', 10, .6, '‹¹‹è¯•ç‚?, '#000000', '#FFFF00', .6);
initMap.addPoint(p);
}
mapListener.onMouseMove = function(geoPoint){
window.status = "lon="+geoPoint.x+"; lat="+geoPoint.y;
}
function win_load(){
initMap = new initMap('map', '221.122.41.10', '80');
initMap.addPanZoomBar(5, 5);
//initMap.addOverviewMap();
//*****åˆå§‹åŒ–地图控刉™¢æ?****
initMap.addControlPanel(60, 20);
initMap.controlPanel.all[0].onclick = function(){initMap.drag();};
initMap.controlPanel.all[1].onclick = function(){initMap.zoomIn();};
initMap.controlPanel.all[2].onclick = function(){initMap.zoomOut();};
initMap.controlPanel.all[3].onclick = function(){initMap.getDistance();};
initMap.controlPanel.all[4].onclick = function(){initMap.onPoint('onPoint1');};
initMap.controlPanel.all[5].onclick = function(){initMap.onRect('onRect1');};
initMap.controlPanel.style.width = '370px';
//*************************
}
function onPoint1(geoPoint){
var p = new Point(1, geoPoint, '#0000ff', 10, 1, '‹¹‹è¯•ç‚?, '#000000', '#FFFF00', .6);
initMap.addPoint(p);
}
function onRect1(geoRect){
var rectArea = new RectArea(1, geoRect, '#00ff00', 0.5, '#0000ff', 1);
initMap.addRect(rectArea);
}
function win_unload(){
initMap.listenerAgent.removeListener(mapListener);
}
//ç‚ÒŽ(gu¨©)“ä½?
function addPoint(){
var lon = OpenLayers.Util.getElement('addPointLon').value;
var lat = OpenLayers.Util.getElement('addPointLat').value;
var geoPoint = new GeoPoint(parseFloat(lon), parseFloat(lat));
var p = new Point(1, geoPoint, '#0000ff', 10, 1, 'ä¸æ–‡ä¸æ–‡ä¸æ–‡ä¸æ–‡', '#FFFF00', '#00FF00', 1);
initMap.addPoint(p);
}
function deletePoint(){
initMap.deletePoint(1);
}
function clearPoint(){
initMap.clearPoint();
}
//¾U¿æ“ä½?
function addLine(){
var str = OpenLayers.Util.getElement('addPolygonPoints').value;
var pointArr = str.split(",");
var points = new Array();
for(var i = 0; i < pointArr.length; i+=2){
points.push(new GeoPoint(parseFloat(pointArr[i]), parseFloat(pointArr[i+1])));
}
var line = new Line(1, points, '#000000', 4, 1);
initMap.addLine(line);
}
function deleteLine(){
initMap.deleteLine(1);
}
function clearLine(){
initMap.clearLine();
}
//圆åÅžæ“作
var regularPolygonFeature;
function addCircle(){
lon = OpenLayers.Util.getElement('addCircleLon').value;
lat = OpenLayers.Util.getElement('addCircleLat').value;
radius = OpenLayers.Util.getElement('addPointRadius').value;
var geoCircle = new GeoCircle(parseFloat(lon), parseFloat(lat), parseFloat(radius));
var circleArea = new CircleArea(1, geoCircle, '#00ff00', 0.5, '#0000ff', 1);
//alert(circleArea);
initMap.addCircle(circleArea);
}
function deleteCircle(){
initMap.deleteCircle(1);
}
function clearCircle(){
initMap.clearCircle();
}
//矩åÅžæ“作
function addRect(){
var left = OpenLayers.Util.getElement('addRectLeft').value;
var top = OpenLayers.Util.getElement('addRectTop').value;
var right = OpenLayers.Util.getElement('addRectRight').value;
var bottom = OpenLayers.Util.getElement('addRectBottom').value;
if(left != null && left != '' && top != null && top != '' && right != null && right != '' && bottom != null && bottom != ''){
var geoRect = new GeoRect(parseFloat(left), parseFloat(top), parseFloat(right), parseFloat(bottom));
var rectArea = new RectArea(1, geoRect, '#00ff00', 0.5, '#0000ff', 1);
initMap.addRect(rectArea);
}
}
function deleteRect(){
initMap.deleteRect(1);
}
function clearRect(){
initMap.clearRect();
}
//多边�
function addPolygon(){
var str = OpenLayers.Util.getElement('addPolygonPoints').value;
if(str != null && str != ''){
var pointArr = str.split(",");
var nPoints = new Array();
for(var i = 0; i < pointArr.length; i+=2){
nPoints.push(new OpenLayers.Geometry.Point(parseFloat(pointArr[i]), parseFloat(pointArr[i+1])));
}
var polygonArea = new PolygonArea(1, nPoints, '#0000ff', 0.1, '#0000ff', 2);
initMap.addPolygon(polygonArea);
}
}
function deletePolygon(){
initMap.deletePolygon(1);
}
function clearPolygon(){
initMap.clearPolygon();
}
//æ ‡è®°å’Œå¼¹å‡ºçª—å?
function addMarker(){
var str = OpenLayers.Util.getElement('popupPosition').value;
var pointArr = str.split(",");
var marker = new Marker(1, new GeoPoint(parseFloat(pointArr[0])-.2, parseFloat(pointArr[1])),
'img/zoom-world-mini.png', 30, 30,
'<center><a target="_blank">癑ֺ¦</a></center>', '‹¹‹è¯•POI1', '#000000', '#DDD', .8, false);
initMap.addMarker(marker);
var marker2 = new Marker(2, new GeoPoint(parseFloat(pointArr[0]), parseFloat(pointArr[1])),
'img/zoom-world-mini.png', 30, 30,
'<center><a target="_blank">癑ֺ¦</a></center>', '‹¹‹è¯•POI2', '#000000', '#DDD', .8, true);
initMap.addMarker(marker2);
var marker3 = new Marker(3, new GeoPoint(parseFloat(pointArr[0])+.2, parseFloat(pointArr[1])),
'img/zoom-world-mini.png', 30, 30,
'', '‹¹‹è¯•POI3', '#000000', '#DDD', .8, true);
initMap.addMarker(marker3);
}
function deleteMarker(){
initMap.deleteMarker(1);
}
function clearMarker(){
initMap.clearMarker();
}
//弹出½H—å£
function addPopup(){
var str = OpenLayers.Util.getElement('popupPosition').value;
if(str != null && str != ''){
var pointArr = str.split(",");
var p = new GeoPoint(parseFloat(pointArr[0]), parseFloat(pointArr[1]));
var popup = new Popup(1, p, .9, '<center>北京çµå›¾æŠ€æœ¯æœ‰é™å…¬å?/center><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><center>çµå›¾</center>', 272, 170 , true);
initMap.addPopup(popup);
}
}
function deletePopup(){
initMap.deletePopup(1);
}
function clearPopup(){
initMap.clearPopup();
}
function addScale(){
initMap.addScale();
}
function getScale(){
var obj = OpenLayers.Util.getElement('scaleId');
obj.value = initMap.getScale();
}
function removeScale(){
initMap.removeScale();
}
function addPanZoomBar(){
initMap.addPanZoomBar(5, 5);
}
function removePanZoomBar(){
initMap.removePanZoomBar();
}
function addListener(){
initMap.listenerAgent.addListener(mapListener);
}
function removeListener(){
initMap.listenerAgent.removeListener(mapListener);
}
function setCenter() {
var center = new GeoPoint(106.5220,29.5616);
initMap.setCenter(center);
}
function getCenter(){ alert(initMap.getCenter()); }
function addSelectFeature(){ initMap.addSelectFeature(); }
function zoomOut(){ initMap.zoomOut(); }
function drag(){ initMap.drag(); }
function addLonLat(){ initMap.addLonLat(); }
function setMapByRect(){
geoRect = new GeoRect(106.4253,29.5725,106.6100,29.4756);
initMap.setMapByRect(geoRect);
}
function setMapByPoints(){
var str = OpenLayers.Util.getElement('addPolygonPoints').value;
if(str != null && str != ''){
var pointArr = str.split(",");
var nPoints = new Array();
for(var i = 0; i < pointArr.length; i+=2){
nPoints.push(new OpenLayers.Geometry.Point(parseFloat(pointArr[i]), parseFloat(pointArr[i+1])));
}
initMap.setMapByPoints(nPoints);
}
}
var floatPopup, floatPopup1, floatPopup2;
function addFloatPopup(){
var jsContent = "<strong>½W¬ä¸€ä¸ªå¼¹å‡ºçª—å£å†…å®?/strong><br /><center><input type=\"button\" value=\"弹出½W¬äºŒä¸ªçª—å£\" onclick=\"test1()\" /></center>";
floatPopup = new creatPopup('aaa', 200, 230, 244, 386, '½W¬ä¸€ä¸ªçª—å?, jsContent);
//alert(floatPopup);
}
function addFloatPopup1(){
var jsContent = "<strong>½W¬ä¸€ä¸ªå¼¹å‡ºçª—å£å†…å®?/strong>";
creatPopup('aaa', 400, 430, 244, 386, '‹¹‹è¯•½H—å£', jsContent);
}
function test1(){
creatPopup('bbb', 100, 130, 440, 250, '½W¬äºŒä¸ªçª—å?, '<center>内容</center>');
}
function closePopup_LP(id){
closeFloatPopup(id);
}
function zoomIn(){
initMap.zoomIn();
}
function zoomOut(){
initMap.zoomOut();
}
function getDistance() {
initMap.getDistance();
}
/*********需è¦å›žè°ƒçš„函数**********/
function clearRect(){
initMap.clearRect();
}
function eventAgent(evt) {
initMap.eventAgent(evt);
}
/*******************************/
</script>
<div style="border-right: black 1px solid; border-top: black 1px solid; border-left: black 1px solid; width: 640px; border-bottom: black 1px solid; height: 480px">
<div class="wmqeeuq" id="map" style="width: 100%; height: 100%"></div>
</div>
<form action="" method="post">
<!-- <input type="text" value="" name="loggers" size="100" /> --><!--<input type=button value='清除' onclick='document.getElementById("loggers").value=""'/ /><br/ />
<textarea rows="5" cols="150" id="loggers"></textarea>
-->
<table width="1024" border="1">
<tbody>
<tr>
<td width="152">地图æ“作</td>
<td colspan="2"><input onclick="initMap.drag();" type="button" value="¿UÕdŠ¨" name="drag" /> <input onclick="initMap.zoomIn()" type="button" value="攑֤§" name="zoomIn" /> <input onclick="initMap.zoomOut()" type="button" value="¾~©å°" name="zoomOut" /> <input onclick="initMap.getDistance()" type="button" value="‹¹‹è·" name="line" /> <input onclick="initMap.getArea()" type="button" value="‹¹‹é¢" name="polygon" /> <input onclick="setCenter()" type="button" value="设ä¸å¿? name="" /> <input onclick="getCenter()" type="button" value="å–ä¸å¿? name="" /> <input onclick="setMapByRect()" type="button" value="讄¡½®åœ°å›¾(rect)" name="" /> <input onclick="setMapByPoints()" type="button" value="讄¡½®åœ°å›¾(points)" name="" /> </td>
</tr>
<tr>
<td width="152">ç‚V€çº¿</td>
<td colspan="2"><input value="106.5220" name="addPointLon" type="text" /> <input value="29.5616" name="addPointLat" type="text" /> <input onclick="addPoint()" type="button" value="åŠ ç‚¹" /> <input onclick="deletePoint()" type="button" value="åˆ ç‚¹" /> <input onclick="clearPoint()" type="button" value="清点" /> <input onclick="addLine()" type="button" value="åŠ çº¿" name="" /> <input onclick="deleteLine()" type="button" value="åˆ çº¿" name="" /> <input onclick="clearLine()" type="button" value="清线" name="" /> </td>
</tr>
<tr>
<td rowspan="3">多边�/td>
<td>�/td>
<td>ä¸å¿ƒ <input size="12" value="106.5220" name="addCircleLon" type="text" /> <input size="12" value="29.5616" name="addCircleLat" type="text" /> åŠå¾„ <input id="addPointRedius" size="12" value="0.09" name="addPointRadius" type="text" /> <input onclick="addCircle()" type="button" value="åŠ åœ†" name="" /> <input onclick="deleteCircle()" type="button" value="åˆ åœ†" name="" /> <input onclick="clearCircle()" type="button" value="清圆" name="" /></td>
</tr>
<tr>
<td>矩åÅž</td>
<td>左上 <input id="addRectLeft" size="12" value="106.4253" name="addRectLeft" type="text" /> <input id="addRectTop" size="12" value="29.5725" name="addRectTop" type="text" /> å³ä¸‹ <input id="addRectRight" size="12" value="106.6100" name="addRectRight" type="text" /> <input id="addRectBottom" size="12" value="29.4756" name="addRectBottom" type="text" /> <input onclick="addRect()" type="button" value="åŠ çŸ©å½? name="" /> <input onclick="deleteRect()" type="button" value="åˆ çŸ©å½? name="" /> <input onclick="clearRect()" type="button" value="清矩å½? name="" /></td>
</tr>
<tr>
<td width="62">多边�/td>
<td width="788"><input id="addPolygonPoints" size="68" value="106.5220,29.5616,106.4253,29.5725,106.5726,29.616" name="addPolygonPoints" type="text" /> <input onclick="addPolygon()" type="button" value="åŠ å¤šè¾¹åÅž" name="" /> <input onclick="deletePolygon()" type="button" value="åˆ å¤šè¾¹åÅž" name="" /> <input onclick="clearPolygon()" type="button" value="清多边åÅž" name="" /> </td>
</tr>
<tr>
<td width="152">æ ‡è®°(marker)</td>
<td colspan="2"><input onclick="addMarker()" type="button" value="åŠ æ ‡è®? name="" /> <input onclick="deleteMarker()" type="button" value="åˆ æ ‡è®? name="" /> <input onclick="clearMarker()" type="button" value="æ¸…æ ‡è®? name="" /> <input id="popupPosition" value="106.4230,29.5616" name="popupPosition" type="text" /> <input onclick="addPopup()" type="button" value="åŠ å¼¹å‡ºçª—å? name="" /> <input onclick="deletePopup()" type="button" value="åˆ å¼¹å‡ºçª—å? name="" /> <input onclick="clearPopup()" type="button" value="清弹出窗å? name="" /> </td>
</tr>
<tr>
<td width="152">滑动æ?PanZoomBar)</td>
<td colspan="2"><input onclick="addPanZoomBar()" type="button" value="æ·ÀL»‘动æ¡" name="" /> <input onclick="removePanZoomBar()" type="button" value="åˆ æ»‘åŠ¨æ¡" name="" /> <input onclick="addLonLat()" type="button" value="æ·È»¾U¬åº¦" name="" /> <input onclick="initMap.addOverviewMap()" type="button" value="添鹰çœ? name="" /> <input onclick="initMap.deleteOverviewMap()" type="button" value="åˆ é¹°çœ? name="" /> </td>
</tr>
<tr>
<td width="152">比例ž®?scale)</td>
<td colspan="2"><input id="scaleId" name="scaleId" type="text" /> <input onclick="getScale()" type="button" value="å–比例尺" name="" /> <input onclick="addScale()" type="button" value="æ·ÀL¯”例尺" name="" /> <input onclick="removeScale()" type="button" value="åˆ æ¯”ä¾‹å°º" name="" /> </td>
</tr>
<tr>
<td width="152">地图属�/td>
<td colspan="2"><input onclick="alert(initMap.getViewSize());" type="button" value="½H—å£å¤§å°" name="" /> <input onclick="alert(initMap.getMapSize());" type="button" value="地图大å°" name="" /> </td>
</tr>
<tr>
<td width="152">事äšg</td>
<td colspan="2"><input onclick="initMap.drag();addListener()" type="button" value="æ·ÕdŠ 监å¬" name="" /> <input onclick="removeListener()" type="button" value="åˆ é™¤ç›‘å¬" name="" /> <input onclick="initMap.onRect('onRect1')" type="button" value="ç”ÀL¡†" name="" /> <input onclick="initMap.onPoint('onPoint1')" type="button" value="ç‚šw€? name="" /> </td>
</tr>
<tr>
<td width="152">其它</td>
<td colspan="2"><input onclick="addFloatPopup()" type="button" value="‹¹®åŠ¨½H—å£A" name="" /> <input onclick="addFloatPopup1()" type="button" value="‹¹®åŠ¨½H—å£B" name="" /> <input onclick="closePopup_LP('aaa')" type="button" value="关闽H—å£A" name="" /> <input onclick="closePopup_LP('bbb')" type="button" value="关闽H—å£B" name="" /> </td>
</tr>
</tbody>
</table>
</form>
<script>
//initMap.addOverviewMap();
win_load();
</script> <img src ="http://www.aygfsteel.com/sunfruit/aggbug/187758.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/sunfruit/" target="_blank">sunfruit</a> 2008-03-21 17:48 <a href="http://www.aygfsteel.com/sunfruit/archive/2008/03/21/187758.html#Feedback" target="_blank" style="text-decoration:none;">å‘表评论</a></div>]]></description></item><item><title>[原创]Applet上å åŠ å±‚çš„è§£å†Ïx–¹æ¡?éždiv)http://www.aygfsteel.com/sunfruit/archive/2007/12/29/171555.htmlsunfruitsunfruitSat, 29 Dec 2007 07:36:00 GMThttp://www.aygfsteel.com/sunfruit/archive/2007/12/29/171555.htmlhttp://www.aygfsteel.com/sunfruit/comments/171555.htmlhttp://www.aygfsteel.com/sunfruit/archive/2007/12/29/171555.html#Feedback0http://www.aygfsteel.com/sunfruit/comments/commentRss/171555.htmlhttp://www.aygfsteel.com/sunfruit/services/trackbacks/171555.html
在applet上å åŠ å±‚æœ?¿Uæ–¹å¼?br />
½W¬ä¸€åQšä‹É用iframeçš„æ–¹å¼?br />
½W¬äºŒåQšä‹É用window.createPopup();æ–¹å¼
<div></div>çš„æ–¹å¼æˆ‘是没有试æˆåŠŸåQŒæ— 论如何设¾|®ï¼Œdiv都在applet的下é¢ï¼Œè¦æ˜¯å“ªä½å®žéªŒæˆåŠŸäº†ï¼Œ¾l验也共享一ä¸?br />
ç”׃ºŽwindow.createPopup()主è¦ç”¨äºŽåˆ›å¾å³é”®èœå•åQŒç”±äºŽå…¶çš„一些特性，例如在其他地方点å‡?该window.createPopup()对象消失åQŒæ‰€ä»¥å åŠ å±‚æ–¹å¼ä½¿ç”¨window.createPopup()òq¶ä¸åˆé€‚，使用iframe制作å åŠ å±‚çš„æ•ˆæžœæ›´å¥½æ›´å¥½
效果囑֦‚ä¸?br />
演示åQ?a >http://www.fruitres.cn/applet.jspåQŒå¯ä»¥ä»Žè¯¥æ¼”½Cºé¡µç›´æŽ¥ä¸‹è²js代ç åQŒæˆ–者到代ç 下貙åµä¸‹è½?br />
代ç 下è²åQ?a >http://www.fruitres.cn/servlet/buyproductservlet?tag=single&tag1=info&PRODUCT_ID=1084563770&number=0
更多下è²åQ?a >http://www.fruitres.cn/
]]> - [资料]WEBå¼€å‘利å™?-JAVASCRIPT API文档 HTML API 文档http://www.aygfsteel.com/sunfruit/archive/2006/10/31/78311.htmlsunfruitsunfruitTue, 31 Oct 2006 08:37:00 GMThttp://www.aygfsteel.com/sunfruit/archive/2006/10/31/78311.htmlhttp://www.aygfsteel.com/sunfruit/comments/78311.htmlhttp://www.aygfsteel.com/sunfruit/archive/2006/10/31/78311.html#Feedback6http://www.aygfsteel.com/sunfruit/comments/commentRss/78311.htmlhttp://www.aygfsteel.com/sunfruit/services/trackbacks/78311.html   有三个压¾~©åŒ…需è¦ä¸‹è½½ï¼Œä¸‹è²ä»¥åŽæ”‘Öœ¨åŒä¸€ä¸ªç›®å½•ä¸è§£åŽ‹å›_¯
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]]> - [转]JavaScripté¢å‘对象的特æ€?/title><link>http://www.aygfsteel.com/sunfruit/archive/2006/08/30/66567.html</link><dc:creator>sunfruit</dc:creator><author>sunfruit</author><pubDate>Wed, 30 Aug 2006 01:37:00 GMT</pubDate><guid>http://www.aygfsteel.com/sunfruit/archive/2006/08/30/66567.html</guid><wfw:comment>http://www.aygfsteel.com/sunfruit/comments/66567.html</wfw:comment><comments>http://www.aygfsteel.com/sunfruit/archive/2006/08/30/66567.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/sunfruit/comments/commentRss/66567.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/sunfruit/services/trackbacks/66567.html</trackback:ping><description><![CDATA[å¦‚æžœä½ ä‹É用JavaScript¾~–程åQŒä½ 或许会怀疑它是å¦åŒ…å«äº†é¢å‘对象（OOåQ‰çš„¾l“构。实际上åQŒJavaScript的确支æŒé¢å‘对象的架构――在æŸç§½E‹åº¦ä¸Šã€‚本文将通过一个å¯æ‰©å±•å‘é‡å›‘ÖÅžåQˆSVGåQ‰çš„实例æ¥è¯´æ˜ŽJavaScriptçš„OO¾l“æž„ã€?
<p></p><p>我如何在¾cÖM¸å®šä¹‰æ–ÒŽ(gu¨©)³•å’Œå±žæ€§ï¼Ÿ</p><p></p><p>OOå¼€å‘的一个基本方é¢æ˜¯¾cÕdŠå…¶ç›¸åº”çš„æ–ÒŽ(gu¨©)³•å’Œï¼æˆ–属性的使用。JavaScript通过function关键å—支æŒç±»åQˆåŠå…¶å±žæ€§ï¼‰çš„ä‹É用。下é¢çš„代ç 定义了一个å«åšFigureçš„JavaScript¾c»ï¼š<br />function Figure() {<br />this.centerX=0;<br />this.centerY=0;<br />this.area=0;<br />this.transform = transform; // methods are defined like this<br />function transform(moveX,moveY,angle) {<br />this.centerX += moveX;<br />this.centerY += moveY;<br />} }</p><p>˜q™ä¸ªFigure¾cÀLœ‰ä¸‰ä¸ªå±žæ€§ï¼šcenterXåQŒcenterYåQŒå’Œarea。å¦å¤–，它还有一个方法å«åštransform()。å‰ä¸‰è¡Œæ˜¯è¿™ä¸ªç±»çš„æž„é€ å™¨ã€?br />但是它看èµäh¥ä¸åƒä¸€ä¸ªç±»<br />ä½ ä¼šæƒ³Figure()看è“væ¥ä¸åƒä¸€ä¸ªç±»åQŒè€Œæ›´åƒä¸€ä¸ªJavaScript的函数。那么äؓ什么Figure()定义的是个类åQ?</p><p>ä¸¥æ ¼çš„è¯´åQŒFigure()函数没有定义一个类åQŒä½†æ˜¯å®ƒä»‰K€ 了一个。它实际上创å»ÞZº†ä¸€ä¸ªå¯¹è±¡ï¼Œåœ¨æ‹¬å·é‡Œçš„代ç ä‹É˜q™ä¸ªå¯¹è±¡çš„æž„é€ å™¨ã€‚JavaScript的对象支æŒæ˜¯å¾ˆåŸº¼‹€çš„，它åƈä¸åŒºåˆ†ç±»å’Œå¯¹è±¡ã€?br />˜q™å°±å¼•åˆ°äº†é—®é¢˜äؓ什么Figure()函数创å¾çš„是一个对象。对象是å¯ä»¥æœ‰å±žæ€§å’Œæ–ÒŽ(gu¨©)³•çš„。基本上åQŒå› 为Figure()函数åŒæ—¶åŒ…å«äº†å±žæ€§å’Œæ–ÒŽ(gu¨©)³•åQŒå®ƒ?y¨u)®±æ˜¯ä¸ªå¯¹è±¡ã€‚在JavaScript里，所有的函数åÏx˜¯å¯¹è±¡åˆæ˜¯å¯è°ƒç”¨çš„代ç å—。这ä¸åƒå®ƒå¬èµäh¥çš„é‚£æ ·å®¹æ˜“è¢«è¯¯è§£ã€‚è¦åˆ›å¾ä¸€ä¸ªFigure()¾c»ï¼å¯¹è±¡åQŒä½ åªç”¨ä½¿ç”¨ä»¥ä¸‹å¥æ³•åQ?br />MyFigure = new Figure();<br />ä½ ä¹Ÿå¯ä»¥æŠŠFigure()函数当作代ç å—调用，ž®±åƒ˜q™æ ·åQ?br />figValue = Figure();<br />å˜é‡figValueæ²¡æœ‰è¢«å®šä¹‰æ˜¯å› äؓ代ç å—Figure()没有˜q”回ä»ÖM½•å€¹{€‚å¦‚æžœä½ æŠŠreturn(this.area)åŠ åˆ°å‡½æ•°çš„æœ€åŽä¸€è¡Œï¼ŒfigValuež®×ƒ¼šæœ‰ä¸ªå€?。所以figValue是个¾cÕdž‹æ•°å—åQŒMyFigure是对è±?Rectangle的实例ã€?br />ä¸ÞZ»€ä¹ˆæ‰€æœ‰çš„å˜é‡å‰é¢éƒ½ä¸€ä¸ªâ€œthisâ€ï¼Ÿ</p><p>˜q™ä¸ªå…³é”®å—this表示˜q™æ˜¯å¯¹è±¡çš„实例å˜é‡ï¼Œå¯ä»¥ä½¿ç”¨MyFigure.centerX从对象外部访问。è¦è®©å˜é‡æˆä¸ºç§æœ‰å˜é‡ï¼ŒåŽÀLŽ‰å‰ç¼€thisž®Þp¡Œäº†ã€‚this.transform = transform˜q™ä¸€è¡Œè®©æ–ÒŽ(gu¨©)³•æˆäؓ公用æ–ÒŽ(gu¨©)³•ã€‚这个方法通过MyFigure.transform(100,100,0)调用ã€?/p>˜q™äº›¾cÀLœ‰å±‚次之分å—？
<p>å¦ä¸€ä¸ªå¥½é—®é¢˜çš„是JavaScript的类是å¦æœ‰å±‚‹Æ¡ä¹‹åˆ†ã€‚回½{”是肯定有。我们æ¥ä»”细看看是怎么åšåˆ°åˆ†å±‚的。我们å¯ä»¥å®šä¹‰ä¸€ä¸ªRectangleåç±»åQŒåƈ把Figure作äؓ父类åQ?</p><p>function Rectangle(startX, startY, endX, endY) {<br />this.width = endX - startX;<br />this.height = endY - startY;<br />this.centerX = (endX + startX)/2;<br />this.centerY = (endY + startY)/2;<br />this.computeArea = computeArea;<br />function computeArea() {<br />this.area = this.width*this.height;<br />} }<br />Rectangle.prototype = new Figure();</p><p>Rectangle对象是用4个自å˜é‡åˆ›å¾çš„，å‰å››è¡Œæ˜¯æž„é€ å™¨ã€?Rectangle¾cÕdŒ…å«äº†ä¸€ä¸ªæ–¹æ³•ï¼š computeArea()。最åŽä¸€è¡ŒRectangle.prototype = new Figure();åQŒæŠŠRectangle¾cÕd®šä¹‰äؓ从Figure¾cÈ‘ô承æ¥çš„å¾c…R€?br />然我æ¥è§£é‡Šä¸€ä¸‹prototypeåQˆåŽŸåž‹ï¼‰ã€‚æ¯ä¸ªå¯¹è±¡æž„é€ å™¨éƒ½æœ‰prototype属性；˜q™æ˜¯ç”¨æ¥¾l™æ‰€æœ‰çš„å¯¹è±¡å¢žåŠ æ–°å±žæ€§å’Œæ–ÒŽ(gu¨©)³•çš„。这ž®±æ˜¯ä¸ÞZ»€ä¹ˆåŽŸåž‹è¢«ç”¨æ¥å®žçŽ°¾l§æ‰¿åQšchild.prototype = new parent();。通过原型åQŒçˆ¶å¯¹è±¡çš„所有属性和æ–ÒŽ(gu¨©)³•éƒ½è¢«æ·ÕdŠ 到å对象上ã€?br />è¦æ³¨æ„this.centerXåQŒthis.centerYåQŒå’Œarea是Rectangle¾cÖM¸æ‰€ä½¿ç”¨çš„属性，但是它们æ˜?Figure父类的属性。和Rectangle¾cÈ›¸ä¼û|¼ŒCircle¾cÕd¯ä»¥è¢«å®šä¹‰æˆFigure¾cÈš„原型。这¿U父åå…³¾pÕd¯ä»¥æŒ‰ä½ 需è¦æ¥å®šä¹‰æ·±åº¦åQ›ä½ å¯ä»¥åˆ›å¾å¦ä¸€ä¸ªRectangleçš„å¾c…R€?br />我如何创å»ÞZ¸€ä¸ªç±»çš„实例？</p><p>在JavaScript里创å»ÞZ¸€ä¸ªç±»çš„实例很å®ÒŽ(gu¨©)˜“åQ?br />rect = new Rectangle(100,100,900,800);<br />˜q™å°±åˆ›å¾äº†Rectangle¾cÕdž‹çš„一个对象。Rectangleçš„æž„é€ å™¨åœ¨å±žæ€§width, height, centerX, å’ŒcenterYä¸å¡«å…¥äº†å€¹{€‚rect.area属性的值是é›Óž¼ˆ0åQ‰ã€‚ä‹É用这个命令就能调用areaæ–ÒŽ(gu¨©)³•åQ?br />rect.computeArea();<br />rect.area的值现在是560,000。è¦è°ƒç”¨transformæ–ÒŽ(gu¨©)³•ä½¿ç”¨åQ?br />rect.transform(100,200,0);</p><p>父和å对象的属性å¯ä»¥åƒ˜q™æ ·è®‰K—®åˆŽÍ¼š<br />var ar = rect.area;<br />var wi = rect.width;</p><p>我能‘…越属性和æ–ÒŽ(gu¨©)³•å—？</p><p>ž®±åƒä½ 在Javaä¸çš„一æ øP¼Œä½ å¯ä»¥è¶…‘Šå±žæ€§å’Œæ–ÒŽ(gu¨©)³•ã€‚在åç±»ä¸å®šä¹‰çš„属性或者方法å¯ä»¥è¶…‘ŠåŒå的父类的属性和æ–ÒŽ(gu¨©)³•ã€?br />和全局å˜é‡äº’动<br />JavaScript也支æŒå…¨å±€å˜é‡çš„ä‹Éç”¨ã€‚åœ¨ä»¥ä¸‹ä»£ç ŒDµä¸‹¹‹è¯•ä¸€ä¸‹g_areaå˜é‡çš„范å›ß_¼š<br /><HTML><br /><SCRIPT><br />var g_area = 20;<br />function Figure() {<br />â€?br />this.area=g_area;<br />â€?br />}<br />function Rectangle(){ â€?}<br />Rectangle.prototype = new Figure();<br />function test(){<br />g_area = 40;<br />rect = new Rectangle();<br />alert(rect.area);<br />}<br /></SCRIPT><br /><BODY onLoad = 'test()'/><br /></BODY><br /></HTML><br />rect.area的值是20åQˆä¸æ˜¯ä½ 预计çš?0åQ‰ï¼Œ˜q™æ˜¯å› äØ“Rectangle对象是Figure对象的原型，˜q™ç§å…³ç³»åœ¨test()被调用以å‰å°±è¢«å®šä¹‰äº†ã€‚è¦ä½¿ç”¨g_areaçš„æ–°å€û|¼Œä½ 需è¦ç”¨ä»¥ä¸‹çš„方法： </p><p>function test() {<br />g_area = 40;<br />Rectangle.prototype = new Figure();<br />rect = new Rectangle();<br />alert(rect.area);<br />}</p><p>对于所有的Rectangle的新实例åQŒè¿™ž®†æ”¹å˜area属性的倹{€‚æˆ–è€…ï¼Œä½ å¯ä»¥ä‹É用这¿U方法：function test() {<br />g_area = 40; <br />rect = new Rectangle();<br />Rectangle.prototype.area = g_area;<br />alert(rect.area);<br />}</p><p>˜q™å°†æ”¹å˜Rectangle所有现å˜çš„以åŠæ–°å®žä¾‹çš„area属性的倹{€?br />¾l“论</p><p>ä¸ÞZº†æ•ˆä»¿OOå¼€å‘，JavaScriptæ供了必需的ç‘ôæ‰Ñ€å°è£…å’Œ‘…越属性，ž®½ç®¡å®ƒä¸æ”¯æŒæŽ¥å£å’Œæ–¹æ³•çš„˜q‡è²ã€‚å¦‚æžœä½ æ˜¯åˆšæŽ¥è§¦åˆ°OOå¼€å‘，用它试试。OO概念å…许开å‘者将一¾l„æ•°æ®å’Œç›¸å…³æ“作集ä¸å…¥ä¸€ä¸ªå¯¹è±¡ã€‚这在管ç†æµè§ˆå™¨äº‹äšg和管ç†æµè§ˆå™¨å†…SVG图时很有用ã€?/p><img src ="http://www.aygfsteel.com/sunfruit/aggbug/66567.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/sunfruit/" target="_blank">sunfruit</a> 2006-08-30 09:37 <a href="http://www.aygfsteel.com/sunfruit/archive/2006/08/30/66567.html#Feedback" target="_blank" style="text-decoration:none;">å‘表评论</a></div>]]></description></item><item><title>[技巧]在JAVASCRIPT里é¢å®žçŽ°å»¶æ—¶åŠŸèƒ½http://www.aygfsteel.com/sunfruit/archive/2006/03/14/35223.htmlsunfruitsunfruitTue, 14 Mar 2006 05:44:00 GMThttp://www.aygfsteel.com/sunfruit/archive/2006/03/14/35223.htmlhttp://www.aygfsteel.com/sunfruit/comments/35223.htmlhttp://www.aygfsteel.com/sunfruit/archive/2006/03/14/35223.html#Feedback0http://www.aygfsteel.com/sunfruit/comments/commentRss/35223.htmlhttp://www.aygfsteel.com/sunfruit/services/trackbacks/35223.html
我们有的时候需è¦åœ¨javascript里é¢å®žçŽ°å»¶æ—¶åŠŸèƒ½åQŒæ¯”如：当æŸä¸€ä¸ªæŒ‰é’®æŒ‰ä¸‹æ交内容以åŽå°±é©¬ä¸ŠæŠŠçŠ¶æ€æ”¹ä¸ºå¤±æ•ˆï¼Œ˜q?¿U’钟以åŽå†æŠŠçŠ¶æ€æ”¹ä¸ºæœ‰æ•ˆï¼Œæ‰å¯ä»¥è¿›è¡Œä¸‹ä¸€‹Æ¡æäº?BR>
˜q™ä¸ª˜q‡ç¨‹ž®±éœ€è¦åšg时功能了åQŒè¿™é‡Œç”¨åˆîCº†javascriptçš„setTimeout函数åQŒè¿™ä¸ªå‡½æ•°çš„å…¥å£å‚æ•°ä¸?个，½W¬ä¸€ä¸ªå‚数是需è¦æ‰§è¡Œçš„内容åQŒè¿™ä¸ªå¯ä»¥æ˜¯ä¸€ä¸ªURLåQŒä¹Ÿå¯ä»¥æ˜¯å¦ä¸€ä¸ªjavascript函数åQŒç¬¬äºŒä¸ªå‚数是åšg时的旉™—´æ•°å•ä½æ˜¯æ¯«ç§’åQŒä¸‹é¢ä‹D个例å?BR>
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]]> - [原创]JAVASCRIPT判æ–输入框ä¸çš„内容全部äØ“æ•°å—çš„ä¸åŒæ–¹æ³•åˆ†æž?/title><link>http://www.aygfsteel.com/sunfruit/archive/2006/02/19/31506.html</link><dc:creator>sunfruit</dc:creator><author>sunfruit</author><pubDate>Sun, 19 Feb 2006 09:45:00 GMT</pubDate><guid>http://www.aygfsteel.com/sunfruit/archive/2006/02/19/31506.html</guid><wfw:comment>http://www.aygfsteel.com/sunfruit/comments/31506.html</wfw:comment><comments>http://www.aygfsteel.com/sunfruit/archive/2006/02/19/31506.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/sunfruit/comments/commentRss/31506.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/sunfruit/services/trackbacks/31506.html</trackback:ping><description><![CDATA[ --sunfruit
<P> 分æžäº†ä‹É用æ£åˆ™è¡¨è¾‘ּ和ä‹É用isNaN函数验è¯è¾“入的内å®ÒŽ(gu¨©)˜¯å¦å…¨éƒ¨äØ“æ•°å—的区åˆ?/P>
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<P> 2ã€ä‹É用isNaN<BR> if (isNaN(xxx)) <BR> {<BR> alert('误‚¾“入数å?');<BR> }<BR> ˜q™ä¸ªè¡¨è¾¾å¼è®¤ä¸?23,1.23,-1.23甚至æ˜?.23都是æ£ç¡®çš?/P>
<P> å¯ä»¥çœ‹å‡º,使用æ£åˆ™è¡¨è¾¾å¼æ›´é€‚åˆéªŒè¯è¾“入内容必须为纯数å—的情å†?而ä‹É用isNaN对输入的内容è¦æ±‚æ›´äؓ宽æ¾ä¸€äº?/P><img src ="http://www.aygfsteel.com/sunfruit/aggbug/31506.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/sunfruit/" target="_blank">sunfruit</a> 2006-02-19 17:45 <a href="http://www.aygfsteel.com/sunfruit/archive/2006/02/19/31506.html#Feedback" target="_blank" style="text-decoration:none;">å‘表评论</a></div>]]></description></item></channel></rss> <footer>
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