As the internet continues to evolve and become a crucial part of our daily lives, the use of HTML tags has become increasingly important. HTML stands for Hypertext Markup Language, and it is the standard markup language used for creating web pages. One of the most commonly used HTML tags is the <script> tag, which is used to embed JavaScript code into a webpage. In this article, we will discuss how to get the content of a file that is specified as the 'src' of a <script> tag.
First, let's understand what the 'src' attribute of a <script> tag is. The 'src' attribute is used to specify the source of the external JavaScript file that needs to be included in the webpage. This allows for better organization and maintenance of code as the JavaScript code can be kept in a separate file and linked to the HTML page using the 'src' attribute.
Now, let's move on to the main topic of this article - getting the content of a file specified as the 'src' of a <script> tag. This task can be achieved using various methods, and we will discuss two of the most commonly used methods.
1. Using the document.write() method:
The document.write() method is used to write HTML expressions or JavaScript code directly to a webpage. This method can also be used to get the content of a file specified as the 'src' of a <script> tag. Let's take a look at the syntax of this method:
document.write('<script src="filename.js"></script>');
As you can see, the 'src' attribute is used to specify the name of the external JavaScript file. Once the file is specified, the document.write() method will automatically retrieve the content of the file and display it on the webpage.
2. Using the XMLHttpRequest Object:
The XMLHttpRequest object is a built-in JavaScript object that is used to exchange data between a webpage and a server. This object can also be used to get the content of a file specified as the 'src' of a <script> tag. Let's take a look at the syntax of using this object:
var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
if (this.readyState == 4 && this.status == 200) {
document.getElementById("result").innerHTML =
this.responseText;
}
};
xhttp.open("GET", "filename.js", true);
xhttp.send();
In this code, we create a new XMLHttpRequest object and specify the name of the external JavaScript file in the xhttp.open() method. Once the file is retrieved, the content is stored in the 'responseText' property of the object and can be displayed on the webpage using the document.getElementById() method.
In conclusion, getting the content of a file specified as the 'src' of a <script> tag is a simple task that can be achieved using various methods. The two methods discussed in this article are widely used and can be implemented easily by anyone with basic knowledge of HTML and JavaScript. As you continue to learn and explore HTML, you will come across many other useful tags and attributes that will enhance your web development skills.
