How do i connect javascript to html?

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Definition and Usage

The src attribute specifies the URL of an external script file.

If you want to run the same JavaScript on several pages in a web site, you should create an external JavaScript file, instead of writing the same script over and over again. Save the script file with a .js extension, and then refer to it using the src attribute in the

What is a script tag?

Before going into the solution of how to link JavaScript to HTML, let’s look at the script tag.

The tag either inside the head of the HTML or at the end of the body. It is totally up to us where we want to put it and when we want JavaScript to load.  Programmers usually call the script tag whenever they want to generate content or apply some action. So by looking at the following code, it is a good practice to load javaScript after the HTML body.

Let’s look at an example:

Example

In this example, first, we created a button in HTML. We set an event to click. Whenever a user clicks on this button the myFunc() function will get activated. After that we put a

Example:

<body>
   <button id="btn">Click Mebutton>
   <script src="code.js">script>
body>

JavaScript

const btn=document.getElementById("btn");

btn.addEventListener("click", function(){
   alert("You clicked me");
})

In this example we accessed the button element using getElementById(). After that we put an event that whenever a user clicks on the button an alert should be shown.

We can achieve the same output if we use:

const btn=document.querySelector("btn");

It should be kept in mind that we have to set the class attribute in the button element.

Conclusion

Linking JS with HTML makes your website dynamic and interactive. In this post, we taught you how to link JavaScript to HTML. We discussed the two main ways of achieving this task.

The first was using JavaScript within the HTML file. The second was using JavaScript outside the HTML file using a JavaScript file. To be a front-end developer it is necessary to work in both HTML and JavaScript and this article showed you how to link both these.

About the author

How do i connect javascript to html?

A Javascript Developer & Linux enthusiast with 4 years of industrial experience and proven know-how to combine creative and usability viewpoints resulting in world-class web applications. I have experience working with Vue, React & Node.js & currently working on article writing and video creation.

We can link JavaScript to HTML by adding all the JavaScript code inside the HTML file. We achieve this using the script tag which was explained earlier. We can put the tag either inside the head of the HTML or at the end of the body.

How can JavaScript be used with HTML?

The HTML tags.
Add JavaScript to a web page.
1 | Create a JavaScript file. In your project, in the same folder as your index. ... .
2 | Add some test code to the file. ... .
3 | Add the file to your web page. ... .
4 | Save your files. ... .
5 | Open the web page in Google Chrome. ... .
6 | Open the Developer Console. ... .
Quick Recap. ... .
Common problems..