How to use the comma operator in JavaScript

This article will explain in detail how to use the comma operator in JavaScript. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

Comma operator

The comma operator (,) evaluates each of its operands (from left to right) and returns the value of the last Operand.

Let x = 1; x = (xcoded, x); console.log (x); / / expected output: 2 x = (2,3); console.log (x); / / expected output: what are the characteristics of 3JavaScript 1. Js belongs to an interpretive scripting language; 2. With the support of most browsers, js can run on multiple platforms and has cross-platform characteristics. 3. Js belongs to a weak type scripting language, which does not make strict requirements for the data types used, and can convert types, which is simple and easy to use; 4. Js language has high security, and it can only browse information or interact dynamically through the browser, thus effectively preventing the loss of data; 5, object-based scripting language, js can not only create objects, but also use existing objects.

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