javascript - What is the point of using an ID attribute in a script tag?

Question

Basically what I am asking is what is the point of giving my script tags an id attribute? Can the routines inside of them be called or referenced differently because of this identification? Could this cause any problems making the script/page act funny?

Answer 1

The id is just another accessor of the <script> tag inside the DOM tree. You could in theory use document.getElementById() to retrieve the <script> node and delete it or add other attributes (though I don't believe you can modify the src attribute once it has loaded in the DOM). The id isn't required for those operations though -- it could have been accessed by any DOM function such as getElementsByTagName("script") as well.

If you do need to access the <script> tag with DOM manipulations, the id makes it just a little easier. Otherwise, there is little benefit¹.

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¹That is sort of true of adding an id attribute to any DOM node, though nodes affecting presentation can also benefit from CSS targeting the id, unlike a <script> tag...