Variable Mutation
Explore variable mutation in JavaScript by learning how to reassign values and copy variables. Understand how reassignment affects stored values and memory usage. This lesson helps you grasp a key concept in managing and manipulating data in your code.
We'll cover the following...
We'll cover the following...
Mutation
Variable mutation is reassigning a variable to another value. This is simply done with the assignment operator =.
The above slides show how assigning a variable into another value will reassign it to a new value while losing the link to the previous value.
NOTE: When a variable is reassigned, it no longer holds its previous value. That previous value may ...