How to change the Button element text using JavaScript

In this tutorial, we are going to learn about how to change the text value of an button element using JavaScript.

Consider, we have a following input button element:

<input type="button" value="Red"  id="btn" />

Now, we want to change the above button text value to blue by using JavaScript.

Changing the button text

To change the button text, first we need to access the button element inside the JavaScript by using the document.getElementById() method and add a click event handler to the button, then set it’s value property to blue.

Here is an example:

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

btn.addEventListener("click", ()=>{

    if(btn.value === "Red"){
        btn.value = "Blue";
    }else{
        btn.value= "Red";
    }
})

Now, when we click on our button, it changes the value from Red to Blue or vice versa.

If you want to change the text value for a HTML <button> element, then you need to update the button element innerText property instead of value property.

HTML:

<button id="btn">Red</button>

JavaScript:

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

btn.addEventListener("click", ()=>{

    if(btn.innerText === "Red"){
        btn.innerText = "Blue";
    }else{
        btn.innerText= "Red";
    }
});