var str = "aa 12 a 1 ";
str = str.replace(/[ ]/g,""); //替换所有空格!
==================== 详细点就是 ==================
var sname = document.getElementsByName("name").value;
sname = sname.replace(/[ ]/g,""); //替换所有空格!
if(sname == "")
{
alert("name 输入为空");
}
var str = "aa 12 a 1 ";
str = str.replace(/[ ]/g,""); //替换所有空格!
==================== 详细点就是 ==================
var sname = document.getElementsByName("name").value;
sname = sname.replace(/[ ]/g,""); //替换所有空格!
if(sname == "")
{
alert("name 输入为空");
}