We are doing landing page needs encountered in the process (disable browser returns, etc.)

The following are some of the requirements to make yourself do the work, why not, to be a note

I. Prohibition of browser return

stopBack: function () {
        var that = this,_num=0;
        if (window.history && window.history.pushState) {
            $(window).on('popstate', function() {
                _num++;
                if(Number(_num)<that.kfh||that.kfh==0){
                    window.history.pushState('forward', null, document.URL);
                    window.history.forward(1);
                    setTimeout(function () {
                        that.down ();
                    }, 5000 ); 
                } the else { 
                    window.history.go ( -1 ); 
                    _num = 0 ; 
                } 
            }); 
            window.history.pushState ( 'Forward', null , document.URL); 
            window.history.forward ( . 1 ); 
        } 
    } 
// method to enter the page calls stopBack

Second, some of the open environment of the judgment

 //判断系统是ios还是安卓
    sysTemInfo: function () {
        var us = navigator.userAgent.toLowerCase();
        if ((us.indexOf('android') > -1 || us.indexOf('linux') > -1) || navigator.platform.toLowerCase().indexOf('linux') != -1) {
            return 'android';
        } else if (us.indexOf('iphone') > -1 || us.indexOf('ipad') > -1) {
            return 'ios';
        }else{
            return 'pc';
        }
    },

judgment micro-channel is determined//
     isWeChat: function () {
        var ua = navigator.userAgent.toLowerCase();
        if (ua.match(/MicroMessenger/i) == "micromessenger") {
            return true;
        } else {
            return false;
        }
    },
//微博判断
    isWeiBo:function(){
        var ua = navigator.userAgent.toLowerCase();
        if (ua.match(/WeiBo/i) == "weibo") {
            return true;
        } else {
            return false;
        }
    },

Third, because the open page in the micro-channel can not be downloaded to the browser to download the guide, so I used the following method

weChatRes: function (n-) { 
        $ ( '.wechat') length && $ ( 'WeChat.'. ) .remove ();
         var HTML = '<div class = "WeChat"> <IMG the src = "' + n-+ ' "alt =" top right corner, and then select a browser to open "/> </ div>! ' ; 
        $ ( ' body ' ) .append (HTML); 
    }, 
// the traditional values n, according to Andrews or different ios show different pictures