Variables
Last updated: 2025-03-25 11:41:05
Concepts
Variables in WXS are references to values;
Variables that are not declared and used by direct assignment are defined as global variables;
If a variable is declared without being assigned a value, the default value is undefined;
var behaves in the same way as javascript, there will be variable lifting.
var foo = 1;var bar = "hello world";var i; // i === undefined
In the above code, three variables foo, bar and i are declared. Then, foo is assigned the value 1 and bar is assigned the string "hello world".
Variable Naming
Variable naming must conform to the following two rules:
The first character must be: letter (a-zA-Z), underscore (_);
The remaining characters can be: letters (a-zA-Z), underscore (_), numbers (0-9).
Reserved Identifier
The following identifiers cannot be used as variable names:
deletevoidtypeofnullundefinedNaNInfinityvarifelsetruefalserequirethisfunctionargumentsreturnforwhiledobreakcontinueswitchcasedefault
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