How to get cookies using js?

Question

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What is the “best” way to get and set a single cookie value using JavaScript
Read cookies with JavaScript

When I print_r( $_COOKIE ); in php, I am getting following result.

Array ( [filters] => Array ( [cat] => 1 ) )

Now I want to get value of cat from cookies using JavaScript.

I have tried this:

 function getCookies() {

      var pairs = document.cookie.split(";");
      var cookies = {};
      for (var i=0; i<pairs.length; i++){
        var pair = pairs[i].split("=");
        cookies[pair[0]] = unescape(pair[1]);
      }
      return cookies;
}

When I alert returned result from above function then I am getting an [object Object]. But I don't know how to get value of cat from that object.

How to know value of cat from that returned object ?

Thanks

@Widor: I have read but I want to go deep in cookies array. I have tried it but getting `undefined`. — Student, Nov 02 '11 at 13:30
@Student that is an entirely different question. If you're trying to figure out why your code doesn't work, don't ask "how do I do `X`?" Ask a question **about your code.** — Matt Ball, Nov 02 '11 at 13:31
Don't be so quick to close a question without pointing out errors in my question and without giving me time to explain my question using **Edit** option.. — Student, Nov 02 '11 at 13:37

score 3 · Answer 1 · edited Jun 20 '20 at 09:12

document.cookie. You might also like to read Quirksmode – Cookies.

Edit re OP edit:

When I alert returned result from above function then I am getting an [object Object]. But I don't know how to get value of cat from that object.

How to know value of cat from that returned object ?

The problem is that alert() sucks for debugging. Anything you pass to alert is converted to a string, but objects don't have a terribly useful toString() method. Use a real debugger (and console.log() instead of alert()) instead.

See How can I debug my JavaScript code?

score 1 · Answer 2 · edited Nov 02 '11 at 13:34

1

I believe a Google search would serve you better than a SO post. With that being said, the code below is one of dozens of examples that appears when I Googled "javascript get cookie".

function getCookie(name) {
    var dc = document.cookie;
    var begin = dc.indexOf(name);
    var end = (dc.indexOf(";", begin) == -1) ? dc.length : dc.indexOf(";", begin);

    return unescape(dc.substring((begin + (name.length + 1)), end));
}

edited Nov 02 '11 at 13:34

Widor

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answered Nov 02 '11 at 13:30

James Hill

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I have tried these but getting `undefined` for this specific Cookie array as defined in my question ? – Student Nov 02 '11 at 13:33
How will I call above function to get value of `cat` in cookie array ? – Student Nov 02 '11 at 13:34

How to get cookies using js?

I have tried this:

2 Answers2