如何 console.log() 一个 Angular 项目？

Question

I have been trying to debug an Angular project with console.log() , and I checked my chrome console logging options and made sure that all the levels are enabled, but I still got nothing as an output.

I placed my console.log() in many places in the code, including at the constructor of a class and it still didn't work. I noticed; however, that I get an output at the chrome console when I change console.log() to console.error() . Any idea how to fix this problem?

Answer 1

只需尝试在 console.log 中使用硬编码字符串，如“console.log("something") 并检查它是否打印。否则，您也可以将“调试器”放在代码中要暂停应用程序的位置。使用这个将确保控件是否实际进入该代码块。然后按 F12 并运行您的应用程序。

Answer 2

It may possible, Logging level has been enabled. You can look for below given code to disable it.

if (environment.production) {
    enableProdMode();
}`

There might chance, log is disabled on lint level. When u disable in lint level, on run of ng lint --fix . It remove lower log level. Check your tslint config for more info.

ng lint --fix

More info: Stripping all comments and console.logs with ng build --prod, possible?