I am interested in creating an array with just one value inside it on the spot without having to use a variable. The following code achieves that using a variable:
var arr = [];
arr.push('test');
console.log(arr); // correctly logs ["test"]
However, this approach does not work:
console.log([].push('test')); // logs 1
Why does this output 1 instead of ["test"]? Is it coerced into a boolean?
Array.prototype.push does not return the pushed item or the array itself, but rather the new length of the array.
"I am looking to easily create an array with only one value in it without using a variable"
const arr = ['test'];
console.log(['test']);The functionality of the
push()method involves appending one or more elements to the end of an array and then providing the updated length of the array.
In the initial scenario, you add an element to the array first and then display the contents of the entire array. Conversely, in the alternative example, the focus is on showcasing the result returned by using the push() method.
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