判断手机机型与判断是否是微信浏览器访问

//判断机型

function detect(){

        var equipmentType = "";

        var agent = navigator.userAgent.toLowerCase();

        var android = agent.indexOf("android");

        var iphone = agent.indexOf("iphone");

        var ipad = agent.indexOf("ipad");

        if(android != -1){

            equipmentType = "android";

        }

        if(iphone != -1 || ipad != -1){

            equipmentType = "ios";

        }

        return equipmentType;

    }

//判断是否是微信访问

function is_weixn(){

var ua = navigator.userAgent.toLowerCase();

if(ua.match(/MicroMessenger/i)=="micromessenger") {

return true;

} else {

return false;

}

}