| chapter | 6 |
|---|---|
| pageNumber | 53 |
| description | The join method turns the array in a string an joins it all together without modifying the original array. |
The join method, makes an array turn into a string and joins it all together. It does not change the original array. Here's the syntax for using join:
array.join([separator]);The separator argument is optional and specifies the character to be used to separate the elements in the resulting string. If omitted, the array elements are separated with a comma (,).
For example:
let array = ["one", "two", "three", "four"];
console.log(array.join(" "));
// Result: one two three four{% hint style="warning" %}
Any separator can be specified but the default one is a comma (,).
{% endhint %}
In the above example, a space is used as a separator. You can also use join to convert an array-like object (such as an arguments object or a NodeList object) to a string by first converting it to an array using the Array.prototype.slice() method:
function printArguments() {
console.log(Array.prototype.slice.call(arguments).join(', '));
}
printArguments('a', 'b', 'c'); // Result: "a, b, c"