【轉】javascript里的document.all用法
從IE4開始IE的object model才增加了document.all[],來看看document.all[]的Description:
Array of all HTML tags in the document.Collection of all elements contained by the object.
IE’s document.all collection exposes all document elements.This array provides access to every element in the document.
例1(這個可以讓你理解文檔中哪些是對象)
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Document.All Example</title>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
</head>
<body>
<h1>Example Heading</h1>
<hr />
<p>This is a <em>paragraph</em>. It is only a <em>paragraph.</em></p>
<p>Yet another <em>paragraph.</em></p>
<p>This final <em>paragraph</em> has <em id="special">special emphasis.</em></p>
<hr />
<script type="text/javascript">
<!--
var i,origLength;
origLength = document.all.length;
document.write('document.all.length='+origLength+"<br />");
for (i = 0; i < origLength; i++)
{
document.write("document.all["+i+"]="+document.all[i].tagName+"<br />");
}
//-->
</script>
</body>
</html>
document.all.length=394
document.all[0]=!
document.all[1]=HTML
document.all[2]=HEAD
document.all[3]=TITLE
document.all[4]=META
document.all[5]=META
document.all[6]=META
document.all[7]=META
document.all[8]=META
document.all[9]=META
document.all[10]=LINK
document.all[11]=LINK
document.all[12]=LINK
document.all[13]=!
document.all[14]=META
document.all[15]=META
document.all[16]=META
document.all[17]=META
document.all[18]=META
document.all[19]=META
document.all[20]=META
document.all[21]=!
document.all[22]=BODY
document.all[23]=FORM
document.all[24]=DIV
document.all[25]=INPUT
document.all[26]=!
document.all[27]=STYLE
document.all[28]=SCRIPT
document.all[29]=DIV
document.all[30]=DIV
document.all[31]=DIV
document.all[32]=A
document.all[33]=IMG
document.all[34]=IMG
document.all[35]=DIV
document.all[36]=DIV
document.all[37]=UL
document.all[38]=LI
document.all[39]=A
document.all[40]=LI
document.all[41]=A
document.all[42]=DIV
document.all[43]=UL
document.all[44]=LI
document.all[45]=A
document.all[46]=LI
document.all[47]=A
document.all[48]=LI
document.all[49]=A
document.all[50]=LI
document.all[51]=A
document.all[52]=LI
document.all[53]=A
document.all[54]=STRONG
document.all[55]=LI
document.all[56]=A
document.all[57]=LI
document.all[58]=A
document.all[59]=B
document.all[60]=LI
document.all[61]=A
document.all[62]=B
document.all[63]=LI
document.all[64]=A
document.all[65]=LI
document.all[66]=A
document.all[67]=LI
document.all[68]=A
document.all[69]=LI
document.all[70]=A
document.all[71]=LI
document.all[72]=A
document.all[73]=LI
document.all[74]=A
document.all[75]=DIV
document.all[76]=UL
document.all[77]=LI
document.all[78]=A
document.all[79]=UL
document.all[80]=LI
document.all[81]=A
document.all[82]=LI
document.all[83]=A
document.all[84]=LI
document.all[85]=A
document.all[86]=LI
document.all[87]=A
document.all[88]=LI
document.all[89]=A
document.all[90]=LI
document.all[91]=A
document.all[92]=LI
document.all[93]=A
document.all[94]=LI
document.all[95]=A
document.all[96]=LI
document.all[97]=A
document.all[98]=LI
document.all[99]=A
document.all[100]=LI
document.all[101]=A
document.all[102]=LI
document.all[103]=A
document.all[104]=LI
document.all[105]=A
document.all[106]=LI
document.all[107]=A
document.all[108]=LI
document.all[109]=A
document.all[110]=LI
document.all[111]=A
document.all[112]=LI
document.all[113]=A
document.all[114]=LI
document.all[115]=A
document.all[116]=LI
document.all[117]=A
document.all[118]=LI
document.all[119]=A
document.all[120]=LI
document.all[121]=A
document.all[122]=LI
document.all[123]=A
document.all[124]=LI
document.all[125]=A
document.all[126]=DIV
document.all[127]=DIV
document.all[128]=!
document.all[129]=DIV
document.all[130]=DIV
document.all[131]=!
document.all[132]=DIV
document.all[133]=DIV
document.all[134]=SPAN
document.all[135]=DIV
document.all[136]=DIV
document.all[137]=P
document.all[138]=A
document.all[139]=A
document.all[140]=DIV
document.all[141]=SPAN
document.all[142]=DIV
document.all[143]=IFRAME
document.all[144]=DIV
document.all[145]=SPAN
document.all[146]=DIV
document.all[147]=P
document.all[148]=A
document.all[149]=A
document.all[150]=A
document.all[151]=A
document.all[152]=A
document.all[153]=A
document.all[154]=A
document.all[155]=A
document.all[156]=A
document.all[157]=A
document.all[158]=A
document.all[159]=A
document.all[160]=A
document.all[161]=A
document.all[162]=A
document.all[163]=A
document.all[164]=DIV
document.all[165]=SPAN
document.all[166]=DIV
document.all[167]=DIV
document.all[168]=P
document.all[169]=A
document.all[170]=IMG
document.all[171]=P
document.all[172]=A
document.all[173]=IMG
document.all[174]=P
document.all[175]=A
document.all[176]=IMG
document.all[177]=P
document.all[178]=A
document.all[179]=IMG
document.all[180]=P
document.all[181]=A
document.all[182]=IMG
document.all[183]=P
document.all[184]=A
document.all[185]=IMG
document.all[186]=P
document.all[187]=A
document.all[188]=IMG
document.all[189]=!
document.all[190]=DIV
document.all[191]=H5
document.all[192]=DIV
document.all[193]=UL
document.all[194]=LI
document.all[195]=A
document.all[196]=IMG
document.all[197]=SPAN
document.all[198]=A
document.all[199]=P
document.all[200]=LI
document.all[201]=A
document.all[202]=IMG
document.all[203]=SPAN
document.all[204]=A
document.all[205]=P
document.all[206]=LI
document.all[207]=A
document.all[208]=IMG
document.all[209]=SPAN
document.all[210]=A
document.all[211]=P
document.all[212]=DIV
document.all[213]=H5
document.all[214]=DIV
document.all[215]=UL
document.all[216]=LI
document.all[217]=A
document.all[218]=IMG
document.all[219]=SPAN
document.all[220]=A
document.all[221]=P
document.all[222]=LI
document.all[223]=A
document.all[224]=IMG
document.all[225]=SPAN
document.all[226]=A
document.all[227]=P
document.all[228]=LI
document.all[229]=A
document.all[230]=IMG
document.all[231]=SPAN
document.all[232]=A
document.all[233]=P
document.all[234]=!
document.all[235]=DIV
document.all[236]=SPAN
document.all[237]=DIV
document.all[238]=DIV
document.all[239]=TABLE
document.all[240]=TBODY
document.all[241]=TR
document.all[242]=TD
document.all[243]=A
document.all[244]=IMG
document.all[245]=TD
document.all[246]=A
document.all[247]=IMG
document.all[248]=HR
document.all[249]=UL
document.all[250]=LI
document.all[251]=A
document.all[252]=LI
document.all[253]=A
document.all[254]=LI
document.all[255]=A
document.all[256]=LI
document.all[257]=A
document.all[258]=LI
document.all[259]=A
document.all[260]=LI
document.all[261]=A
document.all[262]=LI
document.all[263]=A
document.all[264]=LI
document.all[265]=A
document.all[266]=LI
document.all[267]=A
document.all[268]=LI
document.all[269]=A
document.all[270]=P
document.all[271]=A
document.all[272]=A
document.all[273]=!
document.all[274]=!
document.all[275]=DIV
document.all[276]=SCRIPT
document.all[277]=!
document.all[278]=DIV
document.all[279]=DIV
document.all[280]=H5
document.all[281]=DIV
document.all[282]=P
document.all[283]=BR
document.all[284]=BR
document.all[285]=DIV
document.all[286]=P
document.all[287]=A
document.all[288]=A
document.all[289]=A
document.all[290]=DIV
document.all[291]=P
document.all[292]=SELECT
document.all[293]=OPTION
document.all[294]=OPTION
document.all[295]=OPTION
document.all[296]=OPTION
document.all[297]=OPTION
document.all[298]=INPUT
document.all[299]=SPAN
document.all[300]=IMG
document.all[301]=IMG
document.all[302]=IMG
document.all[303]=IMG
document.all[304]=IMG
document.all[305]=SPAN
document.all[306]=A
document.all[307]=A
document.all[308]=A
document.all[309]=A
document.all[310]=SPAN
document.all[311]=DIV
document.all[312]=P
document.all[313]=DIV
document.all[314]=P
document.all[315]=DIV
document.all[316]=STRONG
document.all[317]=STRONG
document.all[318]=SPAN
document.all[319]=BR
document.all[320]=BR
document.all[321]=STRONG
document.all[322]=SPAN
document.all[323]=STRONG
document.all[324]=SPAN
document.all[325]=BR
document.all[326]=DIV
document.all[327]=STRONG
document.all[328]=SPAN
document.all[329]=BR
document.all[330]=BR
document.all[331]=STRONG
document.all[332]=SPAN
document.all[333]=DIV
document.all[334]=STRONG
document.all[335]=SPAN
document.all[336]=BR
document.all[337]=BR
document.all[338]=DIV
document.all[339]=BR
document.all[340]=BR
document.all[341]=BR
document.all[342]=BR
document.all[343]=STRONG
document.all[344]=SPAN
document.all[345]=BR
document.all[346]=BR
document.all[347]=BR
document.all[348]=BR
document.all[349]=BR
document.all[350]=BR
document.all[351]=BR
document.all[352]=BR
document.all[353]=BR
document.all[354]=BR
document.all[355]=BR
document.all[356]=BR
document.all[357]=BR
document.all[358]=STRONG
document.all[359]=SPAN
document.all[360]=BR
document.all[361]=STRONG
document.all[362]=SPAN
document.all[363]=BR
document.all[364]=BR
document.all[365]=BR
document.all[366]=STRONG
document.all[367]=SPAN
document.all[368]=STRONG
document.all[369]=SPAN
document.all[370]=BR
document.all[371]=BR
document.all[372]=BR
document.all[373]=BR
document.all[374]=BR
document.all[375]=DIV
document.all[376]=DIV
document.all[377]=DIV
document.all[378]=STRONG
document.all[379]=FONT
document.all[380]=DIV
document.all[381]=HR
document.all[382]=DIV
document.all[383]=EM
document.all[384]=EM
document.all[385]=DIV
document.all[386]=EM
document.all[387]=DIV
document.all[388]=EM
document.all[389]=EM
document.all[390]=DIV
document.all[391]=HR
document.all[392]=P
document.all[393]=SCRIPT
document.all.length=18
document.all[0]=!
document.all[1]=HTML
document.all[2]=HEAD
document.all[3]=TITLE
document.all[4]=META
document.all[5]=BODY
document.all[6]=H1
document.all[7]=HR
document.all[8]=P
document.all[9]=EM
document.all[10]=EM
document.all[11]=P
document.all[12]=EM
document.all[13]=P
document.all[14]=EM
document.all[15]=EM
document.all[16]=HR
document.all[17]=SCRIPT
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>單擊DIV變色</title>
<style type="text/css">
<!--
#docid{
height:400px;
width:400px;
background-color:#999;}
-->
</style>
</head>
<body><div id="docid" name="docname" onClick="bgcolor()"></div>
</body>
</html>
<script language="javascript" type="text/javascript">
<!--
function bgcolor(){
document.all[7].style.backgroundColor="#000"
}
-->
</script>
<div id="docid" name="docname"></div>,你可以通過這個DIV的ID,NAME或INDEX屬性訪問這個DIV:
document.all["docname"]
document.all.item("docid")
document.all.item("docname")
document.all[7]
document.all.tags("div")則返回文檔中所有DIV數組,本例中只有一個DIV,所以用document.all.tags("div")[0]就可以訪問了。
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Document.All Example #2</title>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1" />
</head>
<body>
<!-- Works in Internet Explorer and compatible -->
<h1 id="heading1" align="center" style="font-size: larger;">DHTML Fun!!!</h1>
<form name="testform" id="testform" action="#" method="get">
<br /><br />
<input type="button" value="Align Left"
onclick="document.all['heading1'].align='left';" />
<input type="button" value="Align Center"
onclick="document.all['heading1'].align='center';" />
<input type="button" value="Align Right"
onclick="document.all['heading1'].align='right';" />
<br /><br />
<input type="button" value="Bigger"
onclick="document.all['heading1'].style.fontSize='xx-large';" />
<input type="button" value="Smaller"
onclick="document.all['heading1'].style.fontSize='xx-small';" />
<br /><br />
<input type="button" value="Red"
onclick="document.all['heading1'].style.color='red';" />
<input type="button" value="Blue"
onclick="document.all['heading1'].style.color='blue';" />
<input type="button" value="Black"
onclick="document.all['heading1'].style.color='black';" />
<br /><br />
<input type="text" name="userText" id="userText" size="30" />
<input type="button" value="Change Text"
onclick="document.all['heading1'].innerText=document.testform.userText.value;" />
</form>
</body>
</html>