Replacing Strings in JavaScript and JQuery

Hey there!

#downloads > ul > li:nth-of-type(1) > ul > li:nth-of-type(3) > a

The CSS selector mentioned above works perfectly in FireFox, Chrome, and Safari. Unfortunately, IE 6 does not support the nth-of-type selector. The CSS selectors I am dealing with are generated by Nokogiri and I don't have the option to modify them.

After experimenting, I found a workaround:

#downloads > ul > li:nth(0) > ul > li:nth(2) > a

This involved changing the nth selector to a standard nth and adjusting the values accordingly. I've been attempting to create a JavaScript program that will automatically convert CSS selectors from using nth-of-type to regular nth. So for example, if we were to input:

#downloads > ul > li:nth-of-type(1) > ul > li:nth-of-type(3) > a

It would output:

#downloads > ul > li:nth(0) > ul > li:nth(2) > a

Thanks!

Eef

javascriptjquerycssregexcss-selectors

Answer №1

JavaScript

var str = "#downloads > ul > li:nth-of-type(1) > ul > li:nth-of-type(3) > a";
str = str.replace(/:nth-of-type\(([0-9]+)\)/g, function(match, first) {
   return ":nth(" + (parseInt(first)-1) + ")";
});

alert(str); // Outputs: #downloads > ul > li:nth(0) > ul > li:nth(2) > a

[View the code in action ]

​

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