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How to parse a URL into hostname and path in javascript?
  • Difficulty Level : Medium
  • Last Updated : 25 Nov, 2020

How to parse a URL  into hostname and path in JavaScript?

URL stands for Uniform Resource Locator. We can parse a URL to access its component and this can be achieved using predefined properties in JavaScript. For Example, the first example parses the URL of the current web page and the second example parses a predefined URL.

Example 1:This example parses the URL of the current web page.

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<!DOCTYPE html>
<html>
  
<body style="text-align:center;">
    <h2 style="color:green;">
        Required URL is:
    </h2>
      
    <p id="para1"></p>
  
    <button onclick="my_function()">
        Parse It
    </button>
      
    <p id="para2"></p>
  
    <p id="para3"></p>
  
    <!--Script to parse the URL of 
        the current web page-->
    <script>
        document.getElementById("para1")
            .innerHTML = window.location.href;
  
        function my_function() {
            document.getElementById("para2")
                .innerHTML = 
`<h3 style="color:green;">Hostname : </h3>` +
                window.location.hostname;
  
            document.getElementById("para3")
                .innerHTML = 
`<h3 style="color:green;">Path : </h3>` +
                window.location.pathname;
        }
    </script>
</body>
  
</html>

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Output:

Before clicking the button:

Before clicking the Button

After clicking the button:



After clicking the Button

Example 2 This example parses the predefined URL.

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<!DOCTYPE html>
<html>
  
<body style="text-align: center;">
    <h2 style="color: green;">
        Required URL is:
    </h2>
    <p id="para1"></p>
  
    <button onclick="my_function()">
        Parse It
    </button>
    <p id="para2"></p>
  
    <p id="para3"></p>
  
    <!--Script to parse predefined URL -->
    <script>
        var my_url = new URL(
  
        document.getElementById("para1")
                .innerHTML = my_url;
  
        function my_function() {
            document.getElementById("para2")
                .innerHTML = 
`<h3 style="color:green;">Hostname : </h3>`
                + my_url.hostname;
  
            document.getElementById("para3")
                .innerHTML = 
`<h3 style="color:green;">Path : </h3>`
                + my_url.pathname;
        }
    </script>
</body>
  
</html>

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Output:

Before clicking the button:

Before clicking the button

After clicking the button:

After clicking the button

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