How does JavaScript debug?

This article w3cschool is a compilation to show you how JavaScript can be debugged.

JavaScript debugs in two ways: console.log（） and debugger The following classification shows how the two methods are debugged.

The console .log method

Open the web page you want to debug with your browser, press F12 or check the 检查元素 view the source code, select console and you can debug. As shown in the following image.

Debugger keyword debug

The debugger keyword is used to stop javaScript execution and call debug functions, much like setting a breakpoint effect in a debugging tool. W hen we turn on the debugger, the code stops executing before the third line. W ithout debugging, the debugger statement will not work. Here are some examples:

var x = 15 * 5;
debugger;
document.getElementbyId("demo").innerHTML = x;

That's all JavaScript does to debug. For more JavaScript learning, follow w3cschool.com.