How to Validate an input field when the user leaves it
When you leave the input field, a function is triggered which transforms the input text to upper case.
index.html
Example:
HTML
Enter your name: <input type="text" name="fname" id="fname" onblur="myFunction()">
<p>When you leave the input field, a function is triggered which transforms the input text to upper case.</p>
<script>
function myFunction() {
let x = document.getElementById("fname");
x.value = x.value.toUpperCase();
}
</script>
Output should be:
| How to Validate an input field when the user leaves it | HTML Attribute |
Type: | Html |
Category: | Web Tutorial |
Sub Category: | HTML Attribute |
Uploaded by: | Admin |