function String.prototype.Trim() { return this.replace(/(^/s*)|(/s*$)/g, ""); } // 去掉左右空格
function String.prototype.Ltrim() { return this.replace(/(^/s*)/g, ""); } // 去掉左空格
function String.prototype.Rtrim() { return this.replace(/(/s*$)/g, ""); } // 去掉右空格
eg.
function getDDLValueForSelected(row) {
// 设置选中行后,下拉菜单显示选中的值
if (G('ctl00_ddl01').disabled == "") { // 下拉菜单为启用状态
if (row.cells(7).innerText != "") {
for (var i = 0; i < G('ctl00_ddl01').options.length; i++) {
if (textTrim(G('ctl00_ddl01').options[i].text) == textTrim(row.cells(1).innerText)) {
G('ctl00_ddl01').selectedIndex = i;
}
}
for (var j = 0; j < G('ctl00_ddl02').options.length; j++) {
if (textTrim(G('ctl00_ddl02').options[j].text) == textTrim(row.cells(2).innerText)) {
G('ctl00_ddlInterface').selectedIndex = j;
}
}
}
}
}
function textTrim(txt) {
return txt.replace(/(^/s*)|(/s*$)/g, "");
}
------------------------------
写成类的方法格式如下:(str.trim();)
<script language="javascript">
String.prototype.trim=function(){
return this.replace(/(^\s*)|(\s*$)/g, "");
}
String.prototype.ltrim=function(){
return this.replace(/(^\s*)/g,"");
}
String.prototype.rtrim=function(){
return this.replace(/(\s*$)/g,"");
}
</script>
写成函数可以这样:(trim(str))
<script type="text/javascript">
function trim(str){ //删除左右两端的空格
return str.replace(/(^\s*)|(\s*$)/g, "");
}
function ltrim(str){ //删除左边的空格
return str.replace(/(^\s*)/g,"");
}
function rtrim(str){ //删除右边的空格
return str.replace(/(\s*$)/g,"");
}
</script>