å¦æä½ è¯´çæ¯javascriptï¼ç¨ï¼
String.prototype.LTrim = function()// ç¨æ£å表达å¼å°åç©ºæ ¼ç¨ç©ºå符串æ¿ä»£ã
{
return this.replace(/(^\s*)/g, "");
}
String.prototype.RTrim = function()// ç¨æ£å表达å¼å°åç©ºæ ¼ç¨ç©ºå符串æ¿ä»£ã
{
return this.replace(/(\s*$)/g, "");
}
String.prototype.LRTrim = function()// ç¨æ£å表达å¼å°ååç©ºæ ¼ç¨ç©ºå符串æ¿ä»£ã
{
return this.replace(/(^\s*)|(\s*$)/g, "");
}
String.prototype.ALLTrim = function()// ç¨æ£å表达å¼å°ææç©ºæ ¼ç¨ç©ºå符串æ¿ä»£ã
{
return this.replace(/ /g, "");
}
// æç©ºæ ¼çå符串
var t = " leading and trailing spaces ";
var s=t;
window.alert("åå§ç:"+s + " (" + s.length + ")");
s = t.lrTrim();// å é¤ååç©ºæ ¼
window.alert("ååï¼"+s + " (" + s.length + ")");
s = t.allTrim();// å é¤allç©ºæ ¼
window.alert("all:"+s + " (" + s.length + ")");
s = t.lTrim();// å é¤åç©ºæ ¼
window.alert("åç©ºæ ¼:"+s + " (" + s.length + ")");
s = t.rTrim();// å é¤åç©ºæ ¼
window.alert("åç©ºæ ¼:"+s + " (" + s.length + ")");
å¦æä½ è¯´çæ¯jspï¼java server pageï¼ï¼ç¨javaçï¼
String s=" asdf sadf";
System.out.println(s.trim());
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