How to Obtain the Running Function\'s Name in JavaScript?
Oct 21, 2024 pm 03:29 PMDeciphering the Enigma: Obtaining the Running Function's Name in JavaScript
The concept of retrieving the name of the currently executing function has been a burning question for programmers navigating the JavaScript landscape. This article delves into the possibilities and practicalities of this seemingly straightforward task.
Limitations in ES5 and Above
As of ES5, JavaScript no longer provides direct access to the name of the running function. This limitation stems from the language's attempt to prevent malicious code from manipulating the call stack.
Accessing the Function Name in Older Versions of JavaScript
Prior to ES5, developers could leverage the arguments.callee property to extract the name of the calling function. However, this approach had a couple of drawbacks:
- The returned value might contain additional information, such as an anonymous function label.
- Some browsers required additional parsing to isolate the pure function name.
Parsing the Function Name
To purify the function name from any additional information, some JavaScript implementations provide the arguments.callee.name property. In cases where this method is unavailable, developers can utilize the following parsing technique:
<code class="javascript">function DisplayMyName() { var myName = arguments.callee.toString(); myName = myName.substr('function '.length); myName = myName.substr(0, myName.indexOf('(')); alert(myName); }</code>
The above is the detailed content of How to Obtain the Running Function\'s Name in JavaScript?. For more information, please follow other related articles on the PHP Chinese website!

Hot Article

Hot tools Tags

Hot Article

Hot Article Tags

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Replace String Characters in JavaScript

Custom Google Search API Setup Tutorial

8 Stunning jQuery Page Layout Plugins

Improve Your jQuery Knowledge with the Source Viewer

10 Mobile Cheat Sheets for Mobile Development
