javascript trim方法
在javascript中的string对象没有trim方法，所以trim功能需要自己实现：
代码如下：
Java代码
﹤scriptlanguage=”javascript”﹥
/**
*删除左右两端的空格
*/
String.prototype.trim=function(){
return this.replace(/(^\s*)|(\s*$)/g, '');
}
/**
*删除左边的空格
*/
String.prototype.ltrim=function()
{
return this.replace(/(^s*)/g,'');
}
/**
*删除右边的空格
*/
String.prototype.rtrim=function()
{
return this.replace(/(s*$)/g,'');
}
﹤/script﹥
﹤scriptlanguage=”javascript”﹥
/**
*删除左右两端的空格
*/
String.prototype.trim=function(){
return this.replace(/(^\s*)|(\s*$)/g, '');
}
/**
*删除左边的空格
*/
String.prototype.ltrim=function()
{
return this.replace(/(^s*)/g,'');
}
/**
*删除右边的空格
*/
String.prototype.rtrim=function()
{
return this.replace(/(s*$)/g,'');
}
﹤/script﹥
使用如下
Java代码
﹤scripttype=”text/javascript”﹥
alert(document.getElementById(’abc’).value.trim());
alert(document.getElementById(’abc’).value.ltrim());
alert(document.getElementById(’abc’).value.rtrim());
﹤/script﹥
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