Get value after string slash from current url javascript

Question

i have a current page url that looks like this:

http://localhost/admin/namespace_module/yeezy/index/test_id/5/key/23123asda/

the url can be dynamic but always contain /test_id/value/ , first i want to check if the /test_id/ is exist in my current url:

window.location.href

then i need to retrieve the value

score 1 · Answer 1 · answered Mar 14 '17 at 06:00

1

Use RegExp#test method.

if(/\/test_id\//.test(window.location.href)){

}

or use String#indexOf method.

if(window.location.href.indexOf('/test_id/') > -1){

}

answered Mar 14 '17 at 06:00

Pranav C Balan

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then how can i retrieve the value after the slash? – Idham Choudry Mar 14 '17 at 06:03
@IdhamChoudry : `window.location.href.split('/test_id/').pop()` – Pranav C Balan Mar 14 '17 at 06:04

score 1 · Accepted Answer · answered Mar 14 '17 at 06:05

1

You can get it with the regular expression in combination with .test() to check and .match() to extract the number:

var url = "http://localhost/admin/namespace_module/yeezy/index/test_id/5/key/23123asda/"; // window.locatioin.href;

if(/test_id\/[0-9]+/.test(url)){
   console.log(url.match(/test_id\/[0-9]+/)[0].match(/[0-9]+/)[0]);
   //--test_id/5---------^^^^^^^^^^^^^^^^^^^^^----5--^^^^^^^^^^^^
}  //--output-----------------------------------output-----------

answered Mar 14 '17 at 06:05

Jai

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The downside to this method is that it is not so efficient. Up to three times a regular expression is executed, while it can be done with one regular expression execution. – trincot Mar 14 '17 at 07:33

score 1 · Answer 3 · answered Mar 14 '17 at 06:05

1

To get the number after testing for the pattern, do:

var match = window.location.href.match(/\/test_id\/(\d+)/);
if (match) {
    // pattern is OK, get the number
    var num = +match[1];
    // ...
}

answered Mar 14 '17 at 06:05

trincot

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Get value after string slash from current url javascript

3 Answers3