如何在javascript中查找失败或导致javascript崩溃/不继续执行的行

Question

Ok, im more of backend programmer so i have very little to no experience on the front-end.

I know when javascript execution has failed due to a bug, like when the page doesn't render properly(due to some javascript code) etc, so how do i find the bug in javascript code? I'm using simple notepad++.

Answer 1

Most browsers have developer tools. Hit F12 and there is a good chance it will pop up. Use the console tab to view error output and use the source tab to add breakpoints and watch variables.