SITUATION: I have recently inherited a website from the previous developer who has scattered important functions across numerous lengthy JS files. I am struggling to track down the source of an inline CSS style within the JS or identify which function is directly applying this style to the element.
QUERY: What techniques can be used to reverse engineer and trace back the origin of an element's inline styles?
If you're looking for a way to track down and debug style modifications in the DOM, one possible method is to utilize a DOM breakpoint within Chrome Dev Tools
To make this approach effective, it's important to set the breakpoint before the style changes are implemented. While this may be challenging at times, you can force a breakpoint to occur prior to any JavaScript loading by inserting the following code right after the relevant HTML element:
<script>debugger</script>Here's how you can test it out with the provided code snippet:
window.onload = function() {
document.querySelector('button').addEventListener('click', function() {
document.querySelector('p').style.border = '2px solid red';
});
}<p> Sample Paragraph </p>
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