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HTML DOM Input URL required Property
The Input URL required property determines whether Input URL is compulsory to set or not.
Syntax
Following is the syntax −
- Returning boolean value - true/false
inputURLObject.required
- Setting required to booleanValue
inputURLObject.required = booleanValue
Boolean Values
Here, “booleanValue” can be the following −
| booleanValue | Details |
|---|---|
| True | It is compulsory to set the url field to submit form. |
| False | It is the default value and to set an url field is not compulsory. |
Example
Let us see an example for Input URL required property −
<!DOCTYPE html>
<html>
<head>
<title>Input URL required</title>
<style>
form {
width:70%;
margin: 0 auto;
text-align: center;
}
* {
padding: 2px;
margin:5px;
}
input[type="button"] {
border-radius: 10px;
}
</style>
</head>
<body>
<form>
<fieldset>
<legend>URL-required</legend>
<label for="URLSelect">URL:
<input type="url" id="URLSelect" required>
</label><br>
<input type="button" onclick="showMessage()" value="Go">
<div id="divDisplay"></div>
</fieldset>
</form>
<script>
var divDisplay = document.getElementById("divDisplay");
var inputURL = document.getElementById("URLSelect");
function showMessage() {
if(inputURL.required === true && inputURL.value === '')
divDisplay.textContent = 'Cannot Redirect: URL is Required';
else
divDisplay.textContent = 'Redirecting...';
}
</script>
</body>
</html>Output
This will produce the following output −
Clicking ‘Go’ button −
After clicking ‘Go’ button with value of an url field set −
Updated on: 30-Jul-2019
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