Introduction
As a web developer, responding to user interactions is a big part of your job. It's not all about clicking or typing; sometimes, it's about what happens when the user stops interacting. JavaScript's onblur event can help us handle these scenarios. This article will explain what onblur is, how to use it, and provide some real-world examples.
What is onblur?
The onblur event in JavaScript triggers when an element loses focus. This can happen for various reasons, such as when a user clicks outside of an input field they were typing in or when they tab to another field.
Syntax of JavaScript onblur
element.onblur = function;
Parameters of JavaScript onblur
function(event)
Exceptions of JavaScript onblur
No exceptions are there in JavaScript onblur.
In the syntax for the onblur event in JavaScript, you assign a function to be executed when an element loses focus. The function specified as the event handler will be invoked when the blur event occurs on the element.
The parameter of the onblur event handler function is typically an event object, which provides information about the event that occurred. This event object can be used to access properties and methods related to the blur event.
Example
Here's a simple example of onblur in action:
document.getElementById("nameInput").onblur = function() {
console.log('Input field lost focus');
}
In this snippet, when the user clicks or tabs away from the input field with the ID nameInput, 'Input field lost focus' is logged to the console.