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I am new to Vue.js, and I am loving it. Previously I used JQuery and having to do everything manually was very inefficient. I liked, however, having the code I wrote in the Chrome debugger so that I could add breakpoints and see what was happening anywhere in my application.

Now I moved to Vue.js, and I am using vue-cli and npm to create, and build a Vue application that generates the actual app code under dist/build.js. I have a method within one Vue component which is not showing any error, but is not behaving as expected.

Is it possible to add a breakpoint within that method so that I see what it is receiving and how it is handling it, running it step-by-step?

From what I have seen, the source code I wrote in the Vue component is within build.js, inside a loooong string within an eval function.

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    Add debugger at the beginning of your method? Commented Mar 25, 2017 at 11:55
  • thanks! that was easy! Would like to add the answer? Commented Mar 25, 2017 at 12:00
  • btw is that a vue functionality or an npm one? Commented Mar 25, 2017 at 12:01
  • @AmreshVenugopal Commented Mar 25, 2017 at 12:05
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    Sure, I'll cover all these details in the answer. :) Commented Mar 25, 2017 at 12:12

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To debug your js applications you can add a debugger statement, it adds breakpoints to your code where applied.

The debugger statement invokes any available debugging functionality, such as setting a breakpoint. If no debugging functionality is available, this statement has no effect.

Source

It is a javascript feature, which got it's initial definition in ECMAScript 5.1

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