How can I convert a toggle string into a boolean value in JavaScript when extracting data from an attribute of an HTML element?

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You can use the JavaScript built-in function Boolean() to convert a toggle string into a boolean value.

For example, if you have an HTML element with a data attribute data-active that has a toggle string as its value:

<div id="my-element" data-active="true"></div>

You can extract the value of the data-active attribute using getAttribute() method and then convert it into a boolean value using Boolean() function:

const isActive = Boolean(document.getElementById('my-element').getAttribute('data-active'));
console.log(isActive); // Output: true (boolean)

In the example above, isActive will be a boolean value true as the toggle string "true" is converted into a Boolean value true.