jQuery Custom Selector for selecting elements by exact text :textEquals

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I needed a way to find labels based on the text that they contained.  I thought about using :contains() for this, but in this particular case the text items I was searching on were names and I could have similar names that :contains() could incorrectly match on.  For instance, if I was searching for “Banks, Tim” and there was an item with the text “Banks, Timothy” I would get both items returned.  This is not the behavior I was looking for.

I decided to write a little custom selector to match on exact text.  Here is the code for the custom selector:

$.expr[':'].textEquals = function(a, i, m) {
return $(a).text().match("^" + m[3] + "$");

What is happening here is I am using a regular expression to test if the start and end of the element’s text matches the string passed in.  Now I could search for the name “Banks, Tim” on a label element like this:

$("label:textEquals('Banks, Tim')");