How To Set h ref Attribute At Runtime In Html

admin_img Posted By Bajarangi soft , Posted On 08-10-2020

We know how to set the href attribute of the anchor tag int HTML, but sometimes we may require to set the the href attribute at runtime i.e. for example, when a user provides us a url and we want to set it at runtime

Html href

Example 1: 
In this example, using jquery, we set the attr() method to the url entered by the user in the input tag, when user clicks the set href buton. 

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Set href attribute at runtime</title>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
    
    <style>
        #btn {
            background-color: #4caf50;
            color: white;
        }
        input {
            color: #4caf50;
        }
        a {
            color: #4caf50;
        }
        h1 {
            color: green;
        }
    </style>
</head>
<body>
<center>
    <h1>Bajarangi Soft</h1>
    <b>Set href attribute at runtime</b>
    <br>
    <input type="text" name="url" />
    <button id="btn">Set href</button>
    <button><a id="click" href="#" target="_blank">link</a></button>
</center>
</body>

<script>
    $(document).ready(function () {
        $("#btn").click(function () {
            $("#click").attr("href",
                $('input[name$="url"]').val());
        });
    });
</script>
</html>
Example 2: 
In this example, we replace the anchor tag in the div ‘link’ with another anchor tag to change the href value. This is another way in which we can change the value of the href attribute. 
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <script src="https://code.jquery.com/jquery-2.1.1.min.js"></script>
    <title>Set href attribute at runtime</title>
    <style>
        #btn {
            background-color: #4caf50;
            color: white;
        }
        input {
            color: #4caf50;
        }
        a {
            color: #4caf50;
        }
        h1 {
            color: green;
        }
    </style>
</head>
<body>
<center>
    <h1>Bajarangi Soft</h1>
    <b>Set href attribute at runtime</b>
    <br>
    <div id="link">
        <a id="click" href=
                "https://blog.bajarangisoft.com/blogs"
           target="_blank">
            https://https://blog.bajarangisoft.com/
        </a>
        <button id="btn">Change url</button>
    </div>
</center>
</body>

<script>
    $(document).ready(function () {
        $("#btn").click(function () {
            $("#link").html(
                "<a href='https://blog.bajarangisoft.com/blogs/'>
            https://blog.bajarangisoft.com/blogs/</a>");
                alert("Url changed to https://blog.bajarangisoft.com/blogs");
        });
    });
</script>
</html>

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