判断是否是用微信打开、是否是用微信朋友圈打开

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①判断是否是用微信打开

<script>
        $(window).on("load",function(){
            function is_weixin() {
                var ua = navigator.userAgent.toLowerCase();
                if (ua.match(/MicroMessenger/i) == "micromessenger") {
                    return true;
                } else {
                    return false;
                }
            }
        })
    </script>

②判断是否是用微信朋友圈打开

方法一：

<script>

$(window).on("load",function(){
            function isnot_weixin() {
                var ua = navigator.userAgent.toLowerCase();
                var wlocat=window.location;
                var re = /timeline/;
                if (!(ua.match(/MicroMessenger/i) == "micromessenger")||(re.test(wlocat)==false)) {
                    return true;
                } else {
                    return false;
                }
            }
        })

</script>

方法二：

<script>　　
$(window).on("load",function(){
    function GetQueryString(name)
    {
        var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
        var r = window.location.search.substr(1).match(reg);
        if(r!=null)return  unescape(r[2]); return null;
    }
    function is_weixin() {
        var ua = navigator.userAgent.toLowerCase();
        var ga = GetQueryString("from");
        if (ua.match(/MicroMessenger/i) == "micromessenger" && ga.match(/timeline/i) == "timeline") {
            return true;
        } else {
            return false;
        }
    }
})

</script>

③判断如果不是用微信朋友圈打开的：

<script>

$(window).on("load",function(){
            function isnot_weixin() {
                var ua = navigator.userAgent.toLowerCase();
                var wlocat=window.location;
                var re = /timeline/;
                if (!(ua.match(/MicroMessenger/i) == "micromessenger")||(re.test(wlocat)==false)) {
                    return true;
                } else {
                    return false;
                }
            }
        })

</script>

判断是否是用微信打开、是否是用微信朋友圈打开

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原文地址：http://www.cnblogs.com/ishuanghe/p/5561127.html