desc = "dd ggg ffff";
String.prototype.replaceAll = function(s1,s2){
return this.replace(new RegExp(s1,"gm"),s2);
alert(desc.replaceAll(' ',''));
}
1 楼
ranyut
2010-04-20
js判断是否为空或全是空格
function checkform()
{
if(document.form1.message.value==""||document.form1.message.value.replace(/(^\s*)|(\s*$)/g, "").length==0)
{
alert("不能发送空内容");
return false;
}
else
return true;
}