H5 页面 点击事件后跳转回 微信公众号

      $("#lq_btn").click(function () {
        if (isPhoneNo($.trim($("#mobile").val())) == false) {
                alert('请输入合法的手机号码！');
                $("#mobile").focus();
                return false;
        }
        if ($.trim($("#yzm").val()).length != 6) {
            alert('请输入正确的验证码！');
            $("#yzm").focus();
            return false;
        }
        $.ajax({
            url: $("#new_welfare").attr('action'),
            data: $("#new_welfare").serializeArray(),
            type: 'post',
            cache: false,
            dataType: 'json',
            success: function (data) {                
                alert(data.msg);
                //跳回微信公众号
                document.addEventListener('WeixinJSBridgeReady', function(){ WeixinJSBridge.call('closeWindow'); }, false);
                WeixinJSBridge.call('closeWindow');
            },
            error: function (data) {
                alert(data.msg);
                //跳回微信公众号
                document.addEventListener('WeixinJSBridgeReady', function(){ WeixinJSBridge.call('closeWindow'); }, false);
                WeixinJSBridge.call('closeWindow');
            }
        })
 });
       // 验证手机号
        function isPhoneNo(phone) {
            var pattern = /^1[345789]\d{9}$/;
            return pattern.test(phone);
        }