前端防御XSS

下面是前端过滤XSS的代码，取自于百度FEX前端团队的Ueditor在线编辑器：

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function xssCheck(str,reg){
    return str ? str.replace(reg || /[&<">'](?:(amp|lt|quot|gt|#39|nbsp|#\d+);)?/g, function (a, b) {
        if(b){
            return a;
        }else{
            return {
                '<':'&lt;',
                '&':'&amp;',
                '"':'&quot;',
                '>':'&gt;',
                "'":'&#39;',
            }[a]
        }
    }) : '';
}

然后我们在原有代码的基础上添加xssCheck()函数就行了。如下：

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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>前端防御XSS#Demo1</title>
</head>
<body>
    <input type="text" name="xss">
    <input type="submit" value="提交" id="xssGet">
</body>
<script type="text/javascript" src="/Public/js/library/jquery.js"></script>
<script>
    $("#xssGet").click(function(){
        $.ajax({
            url: '/defenderXssTest_GetData.php',
            type: 'get',
            dataType: 'text',
            data: "xss="+$('input:first').val(),
            cache:false,
            async:false,
        })
        .done(function() {
            $.ajax({
                url: '/defenderXssTest_QueryData.php',
                type: 'post',
                dataType: 'text',
                cache:false,
                async:false,
            })
            .done(function(data) {
                $("body").append(xssCheck(data));
            })
        })
    });
    function xssCheck(str,reg){
        return str ? str.replace(reg || /[&<">'](?:(amp|lt|quot|gt|#39|nbsp|#\d+);)?/g, function (a, b) {
            if(b){
                return a;
            }else{
                return {
                    '<':'&lt;',
                    '&':'&amp;',
                    '"':'&quot;',
                    '>':'&gt;',
                    "'":'&#39;',
                }[a]
            }
        }) : '';
    }
</script>
</html>
posted @ 2016-03-04 10:45  篮球不止是个球  阅读(402)  评论(0)    收藏  举报