Home > Developer > Web Develop

Js eval function usage, conversion between js objects and strings., evaljs

Source: Internet
Author: User
Tags javascript eval
Developer on Alibaba Coud: Build your first app with APIs, SDKs, and tutorials on the Alibaba Cloud. Read more ＞

Js eval function usage, conversion between js objects and strings., evaljs

The js eval function is used to convert js objects and strings.


JavaScript eval () function JavaScript global function Definition and usage

The eval () function calculates the JavaScript string and runs it as script code.

If the parameter is an expression, the eval () function executes the expression. If the parameter is a Javascript statement, eval () executes the Javascript statement.

Syntax eval ( String)
Parameters Description
String Required. The string to be calculated, which contains the JavaScript expression to be calculated or the statement to be executed. 

<! DOCTYPE html> <body> <script> var te = new Object (); te. a = 'fff'; te. B = 100; eval ("x = 10; y = 20; document. write (x * y) "); document. write ("<br>" + eval ("2 + 2"); document. write ("<br>" + eval (x + 17); var str = JSON. stringify (te); alert (str); eval ('He ('+ str +'); function he (va) {var str = JSON. stringify (va); alert (str); var obj = JSON. parse (str); // converts a json string to an alert (obj);} </script> </body>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
js search and replace node js and npm node js and angularjs tutorial deploy node js and mongodb difference between type casting and type conversion conversion between roman and arabic numerals eval function

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

What's Trending
Top 10 Tags
datastax versions naming convention zookeeper client class definition md5 microsoft sql server 2005 data structures exception handling error handling
Top 10 Keywords
microsoft download center down wordpress address url site address url wordpress address url windows installer 4 0 download 302 not found web address url definition site address url wordpress db2 integer mac os installation step by step pdf abbreviation for return

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

Get Started for Free

  • Sales Support

    1 on 1 presale consultation

    Chat Contact Sales

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

    Open a Ticket

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.

    Learn More