Better JavaScript — Function Calls

Better JavaScript — Function Calls

Like any kind of apps, JavaScript apps also have to be written well. Otherwise, we run into all kinds of issues later on. In this article, we’ll look at ways to improve our JavaScript code.

Like any kind of apps, JavaScript apps also have to be written well.

Otherwise, we run into all kinds of issues later on.

In this article, we’ll look at ways to improve our JavaScript code.

Call Functions with Different Numbers of Arguments with apply

The apply method lets us call a function with a value of this and an array with the arguments.

For instance, we can write:

const min = Math.min.apply(null, [1, 2, 3]);

The first argument is the value of this , which can be anything since Math.min is a static method.

And the rest are the arguments.

This lets us call a function with a variable number of arguments.

We can also use it by getting the values from within the function.

For instance, we can write:

const buffer = {
  state: [],
  append(...args) {
    for (const a of args) {
      this.state.push(a);
    }
  }
};

javascript programming software-development technology web-development

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