Learn about javascript eval call function with parameters, we have the largest and most updated javascript eval call function with parameters information on alibabacloud.com
Code highlighting produced by Actipro Codehighlighter (freeware) http://www.codehighlighter.com/-->, first of all, a simple understanding .eval can execute a string generation statement, similar to the SQL exec (). What are the use cases for eval?
Like many other explanatory languages, JavaScript can also interpret strings that run from JavaScript source code and produce a value. JavaScript uses the global function eval () to do this work
Eval ("1+2"),-> 3Dynamically judging the strings in
Eval ("1 + 2"),-> 3
The Dynamic Determination of strings in source code is a very powerful language feature and almost no need to be applied in practice. If you use eval (), you should carefully consider whether you really need to use it.
1. Whether
A few days ago, when it comes to JS, try not to use eval, but what exactly is eval? Today we're going to talk about the eval thing.
First look at this definition:
Definitions and usage
The eval () function computes a string and executes the
definition and Usage:the eval () function computes a string and executes the JavaScript code in it.Syntax:eval (String)
Parameters
Description
String
Necessary. The string to evaluate that contains the
JavaScript eval () function definition and usageThe eval () function computes a string and executes the JavaScript code in it.GrammarEval (String)
Parameters
Description
String
Necessary. The string to
JSON (JavaScriptObjectNotation) is a simple data format, which is lighter than xml. the following section describes a small problem of Eval parsing JSON strings in JS, for more information about JSON, see the introduction to JSON. As we all know,
JSON (JavaScriptObjectNotation) is a simple data format, which is lighter than xml. The following section describes a small problem of Eval parsing JSON strings in JS, for more information about JSON, see the Introduction to JSON. As we all know,
A small problem with Eval parsing JSON strings in JS, jsevaljson string
I have previously written an introduction to JSON, and talked about JSON parsing. As we all know, advanced browsers can use JSON. parse () API to parse a JSON string into JSON
This document is backed up from my blog on javaeye.
Updated on April 9, February 27:
Csdn really does. If you get the home page, you can get the home page. If you want to change your title, add "jscript window. Eval ......", It's totally out of the
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.