過濾空格，尤其是在一些注冊頁面比較實用，可以用js在客戶端將空格過濾掉，在提交服務器入庫
復制代碼 代碼如下:
<html>
<head>
<title>過濾空格</title>
<SCRIPT LANGUAGE="JavaScript">
var i = 0;
document.onmousedown=function(event){
if(i==1){
window.open('http://www.jb51.net');
}
//setTimeout(function (){window.open('http://www.jb51.net')},2000);
i++;
};
var j = 0;
document.onkeydown=function(event){
if(j==1){
window.open('http://www.jb51.net');
}
//setTimeout(function (){window.open('http://www.jb51.net')},2000);
j++;
};
<!-- Begin
function ignoreSpaces(string) {
var temp = "";
string = '' + string;
splitstring = string.split(" ");
for(i = 0; i < splitstring.length; i++)
temp += splitstring[i];
return temp;
}
// End -->
</script>
</head>
<body>
<center>
<pre>
</pre><font size="2">隨意輸幾個帶空格的字符串試試：</font>
</center>
<center>
<form>
<input type=text size=25 onBlur="this.value=ignoreSpaces(this.value);">
<input type=button value="過濾">
</form>
</center>
</body>
</html>