Name evaluated files with the sourceURL pragma 관련

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Name evaluated files with the sourceURL pragma | Devtools Tips

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Name evaluated files with the sourceURL pragma

If you insert JavaScript code in a webpage by using the eval() function, or inline <script> tags, you can use the sourceURL pragma to give them a name in DevTools.

For example, when using eval():

eval('console.log("Hello world!")\n//# sourceURL=hello-world.js');

The above code snippet not only runs the evaluated code, but it also makes it appear in the Sources (or Debugger) tool as if it came from a file named hello-world.js.

Firefox DevTools, the sourceURL pragma was used when evaluating some code in the Console, and a new file now appears in the Debugger tool, named after the string provided in the sourceURL pragma

This can also be useful when using inline <script> tags:

<script>
  console.log("Hello world!")
  //# sourceURL=hello-world.js
</script>

Using the sourceURL pragma is a great way to debug your code more easily in DevTools. Console messages will be easier to identify, and source code will be easier to debug.

See also

• Use the debugger statement to pause script execution
• Unminify JavaScript code to easily read and debug it
• Detect unused CSS and JavaScript code
• Ignore JavaScript code to ease debugging

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이찬희 (MarkiiimarK)

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