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41 lines
1.6 KiB
Markdown
41 lines
1.6 KiB
Markdown
## background
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When some js functions do not work as expected, this article tries to give a debug solution to pinpoint the problem.
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## Web inspector (DevTools)
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GoldenDict-ng has embedded an inspector, which is actually [chromium's DevTools](https://developer.chrome.com/docs/devtools). You can trigger it manually using `F12`.
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Screenshot:
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## Navigate to the specified element
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Click the find element and move mouse to the specified element, click the element will navigate the source panel to the very place.
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## Modify the css style
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you can play around with the css to modify the appearance of the html and check the results.
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## Check javascript events
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- navigate to the specified element
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- check eventlisterner panel
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- pay attention to the click events
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- in the following screenshot ,there are two registered event listeners, one from the goldendict `gd-custom.js` and one from the html itself.
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- click the above event listener location will locate to the right place in the javascript.
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If some desired event does not triggered , it can first check does the event listeners has been successfully registered. then set a breakpoint in the right place to check whether the event has been triggered and if it can executed successfully.
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## Reproduce the issues
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following your normal operations and debugging the javascript code and pay attention to the console output. Whether any errors happened.
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