How to Efficiently Remove Array Elements Without Loops or Splicing?

Efficient Array Element Removal

Problem:

How can you effectively remove all elements from an array if they appear in a separate array, without using loops or splicing?

Solution:

Utilize the Array.filter() method to accomplish this task. Apply the filter function to the array, comparing each element to the removal array. If the element is not present in the removal array, it is retained in the filtered array.

Code Example:

myArray = myArray.filter(function(el) {
    return toRemove.indexOf(el) < 0;
});

Optimization:

For browsers with support for Array.includes(), you can enhance the code:

myArray = myArray.filter(function(el) {
    return !toRemove.includes(el);
});

Modern Syntax:

Using arrow functions, you can further streamline the code:

myArray = myArray.filter(el => !toRemove.includes(el));

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