How to check if the URL contains a given string?

Question

How could I do something like this:

<script type="text/javascript">
$(document).ready(function () {
    if(window.location.contains("franky")) // This doesn't work, any suggestions?
    {
         alert("your url contains the name franky");
    }
});
</script>

Answer 1

like so:

    <script type="text/javascript">
        $(document).ready(function () {
            if(window.location.href.indexOf("cart") > -1) 
            {
                 alert("your url contains the name franky");
            }
        });
    </script>

Answer 2

Easier it gets

<script type="text/javascript">
$(document).ready(function () {
    var url = window.location.href;
    if(url.includes('franky'))    //includes() method determines whether a string contains specified string.
    {
         alert("url contains franky");
    }
});
</script>

Answer 3

Regular Expressions will be more optimal for a lot of people because of word boundaries \b or similar devices. Word boundaries occur when any of 0-9, a-z, A-Z, _ are on that side of the next match, or when an alphanumeric character connects to line or string end or beginning.

if (location.href.match(/(?:\b|_)franky(?:\b|_)))

If you use if(window.location.href.indexOf("sam"), you'll get matches for flotsam and same, among other words. tom would match tomato and tomorrow, without regex.

Making it case-sensitive is as simple as removing the i.

Further, adding other filters is as easy as

if (location.href.match(/(?:\b|_)(?:franky|bob|billy|john|steve)(?:\b|_)/i))

Let's talk about (?:\b|_). RegEx typically defines _ as a word character so it doesn't cause a word boundary. We use this (?:\b|_) to deal with this. To see if it either finds \b or _ on either side of the string.

Other languages may need to use something like

if (location.href.match(/([^\wxxx]|^)(?:franky|bob|billy|john|steve)([^\wxxx]|$)/i))
//where xxx is a character representation (range or literal) of your language's alphanumeric characters.

All of this is easier than saying

var x = location.href // just used to shorten the code
x.indexOf("-sam-") || x.indexOf("-sam.") || x.indexOf(" sam,") || x.indexOf("/sam")...
// and other comparisons to see if the url ends with it 
// more for other filters like frank and billy

^{Other languages' flavors of Regular Expressions support \p{L} but javascript does not, which would make the task of detecting foreign characters much easier. Something like [^\p{L}](filters|in|any|alphabet)[^\p{L}]}

Answer 4

Suppose you have this script

<div>
  <p id="response"><p>
  <script>
    var query = document.location.href.substring(document.location.href.indexOf("?") + 1);
    var text_input = query.split("&")[0].split("=")[1];
    document.getElementById('response').innerHTML=text_input;
  </script> </div>

And the url form is www.localhost.com/web_form_response.html?text_input=stack&over=flow

The text written to <p id="response"> will be stack

Answer 5

Try this:

<script type="text/javascript">             
    $(document).ready
    (
        function () 
        { 
            var regExp = /franky/g;
            var testString = "something.com/frankyssssddsdfjsdflk?franky";//Inyour case it would be window.location;
            if(regExp.test(testString)) // This doesn't work, any suggestions.                 
            {                      
                alert("your url contains the name franky");                 
            }             
        }
    );         
</script> 

Answer 6

Put in your js file

                var url = window.location.href;
                console.log(url);
                console.log(~url.indexOf("#product-consulation"));
                if (~url.indexOf("#product-consulation")) {
                    console.log('YES');
                    // $('html, body').animate({
                    //     scrollTop: $('#header').offset().top - 80
                    // }, 1000);
                } else {
                    console.log('NOPE');
                }