我正在使用javascript计算页面加载时间。 但不幸的是，我得到的是负值。

Question

I am calculating page load time using JavaScript. But unfortunately I am getting it in negative value.

var loadTime = window.performance.timing.domContentLoadedEventEnd- window.performance.timing.navigationStart;

Output: -51236723

Answer 1

Can you try with this @Shahdab Aalam Saifi

var loadTime = window.performance.timing.domContentLoadedEventEnd- window.performance.timing.navigationStart;
var pageloadtime = (loadTime/1000) ; //returns the seconds

Hope this helps