Updated April 17, 2023
Definition of jQuery get element by id
jQuery provides different types of functionality to the user, in which getting an element by id is one of the functionalities that is provided by the jQuery. Basically, jQuery is a selector and it uses the attribute of the HTML tag to find out the specific element and this element must be unique within the specified HTML page or we can say that webpage. When we need to find a single and unique element at that time we can use jQuery get by element id. JQuery uses attr() method to find out the id of an element. The get by element id is a faster method because it directly calls the JavaScript engine.
What is jQuery get element by id?
jQuery select by ID permits you to track down a particular HTML component with the worth of its trait – “id”. You can choose and do the planned activity on a component by making its id novel.
Syntax:
$('#element of id')Explanation:
The ID could be any value given in the id ascribes of the HTML component. You should utilize # followed by its ID in the selector. For instance, in case there is a HTML component in the archive like <div id=”text”> some text </div>, $(“#text”) will choose the div with id equivalent to ‘message’ and do the expected activity on it.
The primary significance of this jQuery selector is we will deal with every component by its one-of-a-kind id and the controls will influence just that component.
Now let’s see the difference between getElementbyId( “myId”) and $(“#myId)
The document.getElementbyId(“myId”) is quicker in light of the fact that its immediate call to JavaScript motor. jQuery is a covering that standardizes DOM control such that it works reliably in each significant program. The $, in any case, assembles a jQuery object. In the first place, it needs to parse the selector, since jQuery can discover things by class, quality, precursor, and so on while document.getElementById just discovers components by their ID. The jQuery object is anything but a local item, so is slower to make, and it likewise has considerably more potential.
The document.getElementbyId(“myId”) will return you a DOM object though $(“#myId) will return you a jQuery object. By utilizing this jQuery object, you will actually want to utilize jQuery techniques. Unadulterated JavaScript to get to the DOM can be quicker as you can cut the overhead that jQuery has on this. Anyway, it doesn’t generally need to be quicker as you could think of some significant missteps that sluggish things down once more.
By and large, you ought to follow the aphorism of utilizing the least complex code that takes care of business with fitting effectiveness. That would almost certainly be $(“#myId”) except if you were sincerely attempting to enhance unadulterated execution in which case you would utilize the document.getElementById(“myId”).
How to Get the ID?
You can basically utilize the jQuery attr() strategy to get or set the ID characteristic worth of a component. The accompanying model will show the ID of the DIV component in an alarm box on a button click.
Examples
Now let’s see the different examples of get id in jQuery for better understanding as follows.
<!DOCTYPE html>
<html lang="en">
<head>
<title>Jquery home page </title>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<style>
div{
padding: 25px;
background: #0561ca;
}
</style>
<script>
$(document).ready(function(){
$("#myBtn").click(function(){
var eid = $("#demo1").attr("id");
alert(eid);
});
});
</script>
</head>
<body>
<div id="demo1">#WELCOME IN JQUERY HOMW PAGE</div>
<br>
<button type="button" id="myBtn">click on button to see Div ID</button>
</body>
</html>Explanation
By using the above example, we try to implement the get element by id using jQuery. In this example we write the HTML code and use the different tags as per user requirement such as <head>, <title>, <body>, <style> and <script> etc. as shown in above code. Here we also attached the .js file to call the JavaScript directly. After that in the document section actually, we write the code for id as shown, and inside the body tag, we write code for button and div tag. The final output of the above program we illustrated by using the following screenshot as follows.
In the above screenshot, we can see the button and home page title, now we need to click on the button that is “click on the button to see Div ID” as shown in the above screenshot. After clicking on the above button the output of the above code we illustrated by using the following screenshot as follows.
When we click on the ok button then it closes the pop-up message.
In the above example, we saw how we can get a single if for element. But let’s see how we can get id from multiple elements having the same class as follows.
<!DOCTYPE html>
<html lang="en">
<head>
<title>jID from multiple element in Jquery</title>
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<style>
div{padding: 25px;
margin-bottom: 15px;
background: #b97b07;
}
</style>
<script>
$(document).ready(function(){
$("#Btn").click(function(){
var idA = [];
$(".sample").each(function(){
idA.push($(this).attr("id"));
});
alert(idA.join(", "));
});
});
</script>
</head>
<body>
<div class="sample" id="sample_ID_1">#sample one</div>
<div class="sample" id="sample_ID_2">#sample two</div>
<div class="sample" id="sample_ID_2">#sample Three</div>
<button type="button" id="Btn">Click to see ID List</button>
</body>
</html>Explanation
By using the above example, we try to access the multiple ids of elements using jQuery. In this example we write the HTML code and use the different tags as per user requirement such as <head>, <title>, <body>, <style> and <script> etc. as shown in above code. Here we also attached the .js file to call the JavaScript directly. In this example, we use an array to store the multiple ids of elements as shown. Finally, we write the code for the button and id. The final output of the above program we illustrated by using the following screenshot as follows.
After clicking on the above button that is “Click to see ID list” it shows the different id of elements as shown in the following screenshot as follows.
Conclusion
We hope from this article you learn more about the jQuery get element by id. From the above article, we have taken in the essential idea of the get element by id and we also see the representation and example of jQuery get element by id. From this article, we learned how and when we use the jQuery get element by id.
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