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1.鍙兘杈撳叆鏁板瓧
onkeyup="value=value.replace(/[^\d]/g,' ')" //杈撳叆鍏朵粬瀛楃鎴?涔嬬被鐨勫皢琚浛鎹㈡垚" "

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棣栧厛鏄鍒欒〃杈懼紡鐨勫垱寤猴紝鏈?縐嶅姙娉曪細
var my_regex=/[a-z]+/g;
var my_regex=new ("[a-z]+","g");
鏂規硶
exec(string),瀵箂tring榪涜姝e垯澶勭悊,騫惰繑鍥炲尮閰嶇粨鏋?
test(string),嫻嬭瘯string鏄惁鍚湁鍖歸厤緇撴灉
瀛楃涓插璞′腑鐨勬鍒?br />
鏂規硶
match(pattern) 鏍規嵁pattern榪涜姝e垯鍖歸厤,濡傛灉鍖歸厤鍒?榪斿洖鍖歸厤緇撴灉,濡傚尮閰嶄笉鍒拌繑鍥瀗ull
search(pattern) 鏍規嵁pattern榪涜姝e垯鍖歸厤,濡傛灉鍖歸厤鍒頒竴涓粨鏋?鍒欒繑鍥炲畠鐨勭儲寮曟暟;鍚﹀垯榪斿洖-1
replace(pattern,replacement) 鏍規嵁pattern榪涜姝e垯鍖歸厤,鎶婂尮閰嶇粨鏋滄浛鎹負replacement
split(pattern) 鏍規嵁pattern榪涜姝e垯鍒嗗壊,榪斿洖涓涓垎鍓茬殑鏁扮粍

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