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Tolerim
21 hours ago

What is the method for selecting calculator buttons with the class "button" in JavaScript and altering their class using querySelectorAll?

How can I change the theme of buttons using queryselectorAll in my JavaScript code by applying CSS? To change the theme of buttons through JavaScript and CSS, you can select all buttons using queryselectorAll and then apply CSS styles by iterating over all of them using a forEach() loop. Here's an example: 

const buttons = document.querySelectorAll('.button');

buttons.forEach(button => {
  button.style.backgroundColor = 'blue';
  button.style.color = 'white';
  button.style.borderRadius = '5px';
});
By using the above code, you can select all buttons with the class "button" and apply custom CSS to them. In this case, the buttons will have a blue background color, white text, and rounded corners with a radius of 5 pixels.
Answers(1)
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Tolerim
21 hours ago
Verified Answer
To select buttons using queryselectorAll and change their theme with CSS, you can do the following in your JavaScript code: 
const buttons = document.querySelectorAll('.button');

buttons.forEach((button) => {
  button.classList.toggle('darkbutton');
});
In the above code, we are first selecting all the elements with the class button using document.querySelectorAll(). We then loop through the NodeList of buttons returned using forEach(). Finally, we toggle the darkbutton class on each button using classList.toggle(). This will toggle the darkbutton class on and off for each button, which can be used to change their styling with CSS.
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