'var x = 1' will create a variable within the current scope. Given this is declared in a function, x will not be available outside it, unless explicitly returned.
'x = 1' will create a variable within the global scope. Thus, any other code can access and alter its value. It's generally a bad practice to use variables in a global scope.
分享到：
相关推荐
1. **起源与背景** Java是由Sun Microsystems（现为Oracle公司）于1995年推出的，设计目标是“一次编写，到处运行”。C#则由微软公司于2000年代初推出，主要针对.NET框架，旨在提供一种更现代、更安全、更高效的...
In the event of page getting full and reaching the PageItemCount, MGIndex will sort the keys in the page's dictionary and split the data in two pages ( similar to a b+tree split) and update the page ...
1. DOWNLOAD DRUPAL AND OPTIONALLY A TRANSLATION You can obtain the latest Drupal release from http://drupal.org/. The files are in .tar.gz format and can be extracted using most compression tools. ...
1. **Why `new` is Awful**: Discusses the drawbacks of using the `new` operator, such as the creation of unnecessary objects and the lack of flexibility. 2. **Why `new` isn't Quite so Awful**: Explains...
The guide addresses the common debate between referring to the operating system as "Linux" versus "GNU/Linux." This distinction is important because the Linux kernel is just one component of the ...
This chapter covers a comprehensive range of topics, including instruction sequencing, instruction formats, addressing modes, stacks, subroutines, additional instructions, and the comparison between ...
+ TParagraph.GetSubText now has optional parameter to disable the object reference char codes #1, #2 and #3 * HTML writer ignores #13 codes when writing the text. * additional savety code in ...
**Item 6: Understand the Relationships Among the Many Different Concepts of Equality** - **Concepts:** Value equality, reference equality, and custom equality. - **Explanation:** - **Value Equality:...
1) If your app currently creates mmBlock archives (spanned directly to hard drive) and you define your own OnGetNextDisk in VCLZip 2.X, you should move your code from this event that handles mmBlock ...
WebSocket facilitates complete duplex communication between the client and server. HTML5 made it possible to create enterprise-level applications considering the important parameters related to ...
thedistancebetweentherequirementsandtheobtainedtrialsolution.Thedeviceunderdevelopment canbeanalyzedwithclassicalnumericalmethodologiessuchasFEM,FDTD...
- Send AJAX requests to the server when a user is dropped onto a different list. - Update the UI based on the response received from the server. ### Example Code Snippet Here's a simplified ...
**Voltage, Current Relationships for R, L, and C**: The behavior of resistors, inductors, and capacitors in AC circuits is different from their behavior in DC circuits. The impedance of these ...
) a world-wide, royalty-free, non-exclusive, perpetual,non-sublicenseable license (1) to use, copy, modify, merge, publish, perform,distribute and/or sell copies of the Original Work and derivative ...
The following are all the settings which are different in either the production ; or development versions of the INIs with respect to PHP's default behavior. ; Please see the actual settings later in...
In addition to the default Bochs method using the CTRL key and the middle mouse button there are now the choices: - CTRL+F10 (like DOSBox) - CTRL+ALT (like QEMU) - F12 (replaces win32 'legacyF12'...
MESSAGE Changes the density and the density units for a solid body. SYNONYMS edit mass, thickness, solid property HELP DSN_solid_density BITMAP editsoliddensity ACTIONS STANDARD SEPARATOR ...
5.9 The Scalar Expression Between Brackets . . . . . . . . . . . . . . . . 106 viii Contents 5.10 The Scalar Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 5.11 Casting of ...
在代码中，我们可以看到多个变量的定义，例如 VAR1、ABV、M1、M2、MTM、MMS、MMM、MML、ZLGJ、MAZL 等，这些变量的计算逻辑基于移动平均线、指数移动平均线、相对强弱指标、累积分布线等技术指标。 公式中还包含了...
boolean验证域的值可以看作是布尔值，可以是true，false，1，0，"1"，"0"，'1' and '0'。date验证域必须为日期字符串形式，可以被Date.parse方法解析。date_format:format验证域必须符合制定的日期格式，允许的日期...