javascript:去除字符串的前后空格

方法一:

function KillSpace(x){

while((x.length>0) && (x.charAt(0)==' '))

x = x.substring(1,x.length);

//while((x.length>0) && (x.charAt(x.length-1)==' '))

while(x.length>0)

x = x.substring(0,x.length-1);

alert("Kill=" + x + "==")

return x;

}

实例: var a = KillSpace(“ abc “); //得出a == “abc“

方法二:

String.prototype.trim = function()

{

return this.replace(/(^\s+)|\s+$/g,"");

}

实例: var a = “ abc “.trim(); //得出a == “abc“