onbeforeunload刷新不触发_onload函数

经常会有一些在用户离开页面前执行一些业务的应用场景，这都要用到 onbeforeunload 事件；比如记录用户停留时长的业务，在 GA 等页面访问统计的应用中都包含这个：

;(function(){

var startTime = Math.ceil(new Date().getTime()/1000), //单位秒

getDuration = function(){

var time = ”,

hours = 0,

minutes = 0,

seconds = 0,

endTime = Math.ceil(new Date().getTime()/1000),

duration = endTime – startTime;

hours = Math.floor(duration/3600); //停留小时数

minutes = Math.floor(duration%3600/60); //停留分钟数

seconds = Math.floor(duration%3600%60); //停留秒数

time = (hours < 10 ? ‘0’ + hours : hours) + ‘:’ + (minutes < 10 ? ‘0’ + minutes : minutes) + ‘:’ + (seconds < 10 ? ‘0’ + seconds : seconds);

return time;

};

window.onbeforeunload = function(e){

var duration = getDuration();

//request(duration);

};

})();

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313***663@qq.com3年前 (2017-12-19)