How do I insert elements into an array in JavaScript?

To insert elements into an array in JavaScript, you can use the array.push(elements), array.unshift(elements), array.splice(start, deleteCount, elements) methods, and the spread ("...") operator. The push() methods allow you to add one or more elements to the end of an array. The unshift() method allows you to add one or more elements to the beginning of an array. The push() and unshift() methods change the original array and its length. The splice() method allows you to change the contents of an array by removing or replacing existing elements or adding new elements to the array. The splice() method modifies an existing array rather than returning a new one. You can also use the spread operator ("..."), which is the modern ES6 way of inserting elements into an array. In this JavaScript array insert example, we use the push() method. Below you can see more examples of inserting elements into a JavaScript array using the push() , unshift() and splice() methods with a detailed description of each method. Click Execute to run the JavaScript Array Insert Example online and see the result.
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