Utilizing JavaScript arrays to store URL query parameters

Could you please provide me with a brief explanation of the purpose of this function? From what I understand, it seems to be extracting variables from the URL and storing them in an Array Object, which is then returned for further processing.

However, I would appreciate more clarity on the matter.


function getUrlVars() {
    var vars = [], hash;
    var hashes = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
    for (var i = 0; i < hashes.length; i++) {
        hash = hashes[i].split('=');
        vars.push(hash[0]);
        vars[hash[0]] = hash[1];
    }
    return vars;
}

Answer №1

This particular function works by taking a URL string, removing everything before the question mark (?), breaking it up using the & symbol as separators, and then creating a dictionary of the key=value pairs found in the URL.

For instance

https://www.example.com/search?q=query+term&page=1&lang=en

In this example search URL,

  1. https://www.example.com/search would be removed,
  2. q=query+term&page=1&lang=en
    would be split by &.
  3. All the key value pairs would be stored in variables, like 'q':'query+term', and so on.

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