Learn how to animate the value of the placeholder attribute with JAVASCRIPT
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In case you have ever thought of animating the value of the placeholder attribute in an Html form input field, I have you covered in this simple post.
We are going to make this possible using javascript and a little bit of CSS to design the placeholder value.
Video/Tutorial
Markup Code
All you need to do is to give your input field an id, Which we will later target using javascript.
<form> <input type="text" id="occEngine" placeholder="Search for: Jquery"> </form>
For our animation to happen we will use the two popular javascript methods namely;
- setTimeout() and
- setInterval().
The setTimeout() method calls a function or evaluates an expression after a specified number of milliseconds.
Note: 1000 milliseconds = 1 second
The setTimeout() method is only executed once,but incase you want to repeat it you use the setInterval() method as i showed you in the video. #Video
Javascript Code
//Waits the for DOM to fully load before running the code inside
document.addEventListener('DOMContentLoaded',function(){
//select the input by it's id
const query = document.querySelector('#occEngine');
function placeholderAnimation(){
setTimeout(function(){
query.setAttribute('placeholder','Search for: Php');
},2000);
setTimeout(function(){
query.setAttribute('placeholder','Search for: Html');
},4000);
setTimeout(function(){
query.setAttribute('placeholder','Search for: Css');
},6000);
setTimeout(function(){
query.setAttribute('placeholder','Search for: Javascript');
},8000);
}
//call or execute function
placeholderAnimation();
//Continues|repeats to call the function every after 8 milliseconds
setInterval(placeholderAnimation,8000);
});
The setInterval() method calls a function at specified intervals in milliseconds.It will always continue calling the function until clearInterval() is called, or the window is closed.
In case you want to download the source code:: Click here description
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collections_bookmark Category :: Javascriptdate_range Published :: 3 years ago At: 10:19 PM
event_note Detailed Date :: Nov 12th, 2019
person Writer :: Code
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