简单JS代码压缩器

时间:2020-05-11 人气:0

1、

<script language="javascript"

type="text/javascript">
//去除所有的注释
String.prototype.DeleteComment = function ()
{
    var str = this.replace(/(['"])(.+?)(['"])/g,function(s,s1,s2,s3){return s1+s2.replace(/[\/\*]/g,"\\$&")+s3});
    str = str.replace(/\/\/[^\r]+|\/\*[\s\S]+?\*\//g,"");
    str = str.replace(/(['"])(.+?)(['"])/g,function(s,s1,s2,s3){return s1+s2.replace(/\\([^\\])/g,"$1")+s3});
    return str;
}
//格式代码
String.prototype.FormatCode = function ()
{
    return this.replace(/\\$/mg,"").replace(/[^\s>;]$/mg,"$&;");
}
//删除字符串前后多余的空格
String.prototype.Trim = function (m)
{
    return this.replace(m ? /^\s*|\s*$/mg : /^\s*|\s*$/g, "");
}
//运行代码
function RunCode(obj)
{
    window.open('','_blank').document.write(obj.value);
}

</script>

测试代码：<br/>
<textArea id="Text" rows="25" cols="80">
<script language="JavaScript">
/*
    测试代码
*/
var x=5;
document.write("x = // " + x);
document.write("bh/* " + x);
document.write("x =jjhj */hhhhhh " + x);
document.write("x = // " + x);

alert(22)

alert(22)

var a="/fwe/////wefawef";
alert(/^\/*[^\/]*$/.test(a));
//注释
</script>

</textArea> <br/><br/>
第1步：<button onclick="Text.value = Text.value.DeleteComment();">删除注释</button> <br/> <br/>
第2步：<button onclick="Text.value=Text.value.FormatCode();">格式代码</button> <br/> <br/>
第3步：<button onclick="Text.value=Text.value.Trim(true);">去除两边空格</button> <br/> <br/>
第4步：<button onclick="RunCode(Text);">运行代码</button> <br/> <br/>

2、

复制代码代码如下:

<HTML><HEAD><TITLE>Format</TITLE>
<META content="MSHTML 6.00.2800.1528" name=GENERATOR>
<META content="" name=Author>
<META content="" name=Keywords>
<META content="" name=Description></HEAD>
<BODY>
<SCRIPT language=JavaScript>

</SCRIPT>
<TEXTAREA id=code rows=12 cols=100>
/*
这个是一个类
*/

function    xx   (num,str){//说明
var a = num;this.aa = a;
this.bb = function(){alert(str);}
this.cc = function(){for(var i=0;i<10;i++){document.title=i;}}};

xx.prototype.dd= function(){alert("d  d        kd");}

var a = new xx(100,"hello"),b=new xx(0,"ttyp");
if(1>2)  {   alert();
}
else {
alert(" hell ");
}

a.bb();
b.dd();
alert(a.aa);

</TEXTAREA> <BR>
<select id="cboOperate" onchange="if(this.selectedIndex==1)document.getElementById('cboStyle').disabled=true;else document.getElementById('cboStyle').disabled=false;">
   <option value="0">格式化</option>
   <option value="1">压缩</option>
</select>
<select id="cboStyle">
   <option value="0">经典</option>
   <option value="1">微软</option>
</select>
<INPUT onclick=go() type=button value=go><br>
<textarea id=display rows=12 cols=100>
</textarea>
</BODY></HTML>

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