If I may ask a brief question driven by curiosity: imagine having an object with an array as a property, like
this.arr = ["one", "two", "three", ...]n elements.
What will occur to these elements if we execute the following command: this.arr = []? Will they be deleted, retained in memory, or leaked?
Thank you!
Creating an empty array with <code>this.arr = []arr property. If there are no more references to the previous array in the program, it will be automatically garbage collected by the JS engine. However, if there are still references to it, the array will persist.
this.arr = [1, 2, 3, 4];
var backup = this.arr;
this.arr = [];
// backup still points to the array, preventing it from being destroyed
If you want to delete an array that you no longer need, you can set it to null like this: this.arr = null.
In JavaScript, there is no concept of "memory leaks". Instead, forgetting to dispose of an unnecessary object can lead to lingering references within a chain of objects, preventing any of them from being destroyed.
By using temporary variables, memory management becomes less of a concern in most cases.
They have been removed. In fact, this is a quick method to clear out an array.
When you assign the value of this.arr to a new variable, the original array remains intact but the new variable will have its own memory address. The memory address stored in the original variable will be cleared out.
When no longer referenced, string objects are subject to deletion. This renders them eligible for garbage collection in order to release them.
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