In this article, we will use JavaScript to perform the task of changing the text within all HTML tags. Let’s dive into this article to learn more about changing text in all HTML, but first, let’s define HTML tags.

What are HTML tags

HTML tag is a piece of markup language used to indicate the beginning and end of HTML elements in an HTML document. HTML tags are the building blocks of HTML elements that help web browsers convert HTML documents into web pages.

For better understanding use JavaScript to change the text inside all HTML tags. Let's look at the following example.

Example

In the example below, we will create a simple web page where we will change the text by running a script.

   
      

         Click on the button to change the text
      
      
         Welcome to Tutorialspoint
      
      

      
         Click Here!
      
      
   

When the script executes, it will generate an output consisting of text and a clicked button. If the user clicks the button, the text will change and another text will appear on the web page.

Use replaceWith()

Element.replaceWith() method replaces the objects in this Element's parent's children list with a set of Node or string objects. Inserts the equivalent text node for a String object.

grammar

The following is the syntax of replaceWith() -

ChildNode.replaceWith(Node);

Example

Consider the following example where we use replaceWith() to change the text within a tag.

   
      

      “
      Lost in the ave of you
      ”
      
      
   

When you run the above script, an output window will pop up showing the text on the web page replaced with the original text used in the script.

Use querySelector()

When one or a set of selectors is provided, the Document method querySelector() returns the first Element in the document that matches them. Returns Null if there is no match.

grammar

The following is the syntax of querySelector()

querySelector(selectors)

Example

Execute the following code, we use querySelector() to change the text in the HTML tag.

   
      
Welcome
      
   

When scripts are executed, they will produce an output containing the text from the web page replaced with the original text used in the markup.

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