Shulou(Shulou.com)05/31 Report--

This article mainly introduces the relevant knowledge of how to use the eval method in js, the content is detailed and easy to understand, the operation is simple and fast, and it has a certain reference value. I believe you will get something after reading this article on how to use the eval method in js. Let's take a look at it.

1. Eval is one of the most powerful methods in js. It is like a complete ECMAScript parser that parses and evaluates strings according to ECMAScript statements.

2. All variable declarations and function declarations in eval will not be increased.

Example

/ / equivalent to directly calling alertvar msg = "hello world"; eval ("alert (msg)"); / / "hello world" / / equivalent to the function declaration eval ("function sayHi () {alert ('hi');}"); this is the end of the article on "how to use the eval method in js". Thank you for reading! I believe you all have a certain understanding of the knowledge of "how to use the eval method in js". If you want to learn more, you are welcome to follow the industry information channel.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.