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This article mainly explains "how to use join in javascript". The content in the article is simple and clear, easy to learn and understand. Please follow the editor's train of thought to study and learn "how to use join in javascript".

In JavaScript, the join () method is used to convert all the elements in the array to a string and to set the delimiter between the elements, the default delimiter is a comma and the syntax is "array.join".

The operating environment of this tutorial: windows10 system, javascript1.8.5 version, Dell G3 computer.

What is the use of join in javascript

The join () method is used to convert all the elements in the array into a string.

Elements are separated by a specified delimiter.

The syntax is as follows:

Array.join (separator)

Separator is optional. Specifies the delimiter to use. If this parameter is omitted, a comma is used as the delimiter.

Returns a string. This string is generated by converting each element of arrayObject into a string, then concatenating these strings, and inserting a separator string between the two elements.

Examples are as follows:

123 Click the button to output the array as a string.

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