Form events in javascript are used to detect or check data in any form input field. JavaScript events are also used to call some functions in JavaScript. This form event is also called a javascript input type event.
JavaScript Form Events in Simple Words
As you all know, JavaScript is a scripting base and events popular programming language. Without learning javascript events is not possible to become a javascript developer.
JavaScript events are the most used function in javascript that every javascript developer must use in their project.
The concept of javascript form events plays a very important role in JavbaScript events functionally. To perform some event or function in any form input field we must use a javascript form event.
JavaScript form events are accessible but an essential events in javascript. If we need to check or detect any form input data we must use javascript form events.
JavaScript is a fully scripting base and events-based programming language. So if you don't know about any javascript event then you can not become a senior javascript developer.
In today's article, you will learn about JavaScript from events. So read this article till the end if you want to know about javascript form events.
Javascript form events are used when the user enters the form input field and adds some data. JavScript form events are used when the user selects or focuses on some form input field.
There are up to ten javascript form events. Below is an events list of javascript forms:
- Keydown, Keypress, keyup JavaScript Form Event
- Input Field JavaScript Form Event
- Focus Input Type JavaScript Event
- Blur JavaScript Form Event
- Change JavaScript Form Event
- Select JavaScript Form Event
- Form Submit JavaScript Form Event
- Invalid Input Field Data JavaScript Form Event
Description
Keydown, Keypress, keyup JavaScript Form Event
Keydown, Keypress, and Keyup JavaScript Form Event are the main JavaScript events. These three events are also called javascript keyboard events. These three events are always worked with javascript form input fields and html body tags.
Keydown: The javascript keydown event works when the akeywoborad button is down, i.e., if the button is up, the javascript kewdown event will end. We can activate this event from any key on the keyword but it is numeric, alphabetic it keyboard functional buttons.
Below is a code example of javascript keydown events. In this example, we make an alert function and execute this by using a key down event.
<body onkeydown="CodingPea()">
<div class="nws-codingpea">
<h1>CodingPea</h1>
</div>
</body>
<script>
function CodingPea(){
alert("Wellcome to CodingPea Blogging Website");
}
</script>
Keypress: The javascript event only works when we press any keyboard key. Whenever we release the keyboard key this event will stop exciting. This event is only worked with keyboard alphabetized keys.
Keyup: Javascript keyup event is executed only when we realize any keyword key.
Input Field JavaScript Form Event
Input Field JavaScript Form Event is the second main JavaScript form event. This javascript event is also called the javascript trigger function.
This javascript event is worked when a user or client adds data to an input field on the form.
Focus Input Type JavaScript Event
JavaScript form input field focus event is an essential event in JavaScript. This event works when we click on some input field.
JavaScript focus event works when we click on an input field. When we click on something, that bond is our focus annotation below a code example of a javascript focus event.
<body>
<div class="nws-codingpea">
<form>
<input type="text" id="input-id" onfocus="CodingPea()">
<input type="text" id="input-id" onfocus="CodingPea()">
</form>
</div>
</body>
<script>
function CodingPea(){
document.getElementById("input-id").style.border = "2px blue";
}
</script>
Blur JavaScript Form Event
A blur javascript event is the complete opposite of a javascript focus event. In this javascript event, we can give some style to an input field when the pointer clicks or the focus is removed.
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