javascript remove empty slots in array console

When you call this method on an array, it will modify and delete items from the original array. The splice() method can remove all elements from arrays in JavaScript. Remove All Elements from Array Using splice() Method This will remove all the elements from the array and you are left with an empty array.Īlso Read: Best Ways to Check If a Variable is an Array in JavaScript To empty the myArray array, you can set the length property of the array to 0. MyArray.length = 0 // Setting length to 0 It doesn't create a new array instead only changes the length of the existing one. If you don't want to replace the old array with a new one, you can use the length property to empty an array in JavaScript. If the old array is very large, this could lead to performance issues.Īlso Read: Remove Duplicates From a JavaScript Array Like a Pro (Easy)Įmpty a JavaScript Array Using The length Property It is a very simple technique but there is a problem.Īs this technique creates a new array and discards the old one, it may not be the most memory-efficient method. This will overwrite the original array with the new one that contains no elements. To remove all items from this array, you simply assign a new empty array to the myArray variable. I have the myArray variable that holds an array with 5 elements. If you have the intention of replacing your array later, define it using let instead of const keyword.

But if you store your previous array in a constant variable, you won't be able to assign it again. One way to empty a JavaScript array is by re-defining it with an empty array. In this blog post, we will go through all these 4 techniques to effectively empty an array in JavaScript with examples. Otherwise, you can set the length property to 0 or use methods like splice() and pop() to empty JavaScript arrays. But it is only possible if you define your array using let keyword. Replacing an existing array with a new empty array is the simplest way to empty the array.

Use the pop() method to empty an array.

Use the splice() method to remove all elements.

Set the length property value of an array to 0.

Replace the old array with the new empty array.

There are 4 different ways to remove all elements from arrays in JavaScript: You may also need to empty a JavaScript array for various reasons. While working with an array in JavaScript, you can add, remove and modify items very easily.

Javascript remove empty slots in array console