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DocumentationTencent Cloud Super App as a ServiceGuildlines for Mini Program DevelopmentFrameworkWXS Syntax ReferenceStatements
Statements
Last updated: 2024-11-21 18:34:18
if Statements
In WXS, you can use if statements in the following formats:
if (expression) statement : Execute statement when expression is truthy.
if (expression) statement1 else statement2 : Execute statement1 when expression is truthy. Otherwise, execute statement2.
if ... else if ... else statementN Using this statement, you can choose one of the executions from statement1 to statementN.
Example Syntax:
// if ...if (Expression) Statement;if (Expression)Statement;if (Expression) {Code block;}// if ... elseif (Expression) Statement;else Statement;if (Expression)Statement;elseStatement;if (Expression) {Code block;} else {Code block;}// if ... else if ... else ...if (Expression) {Code block;} else if (Expression) {Code block;} else if (Expression) {Code block;} else {Code block;}
switch Statements
Example Syntax:
switch (Expression) {case Variable:Statement;case Number:Statement;break;case String:Statement;default:Statement;}
default branches can be omitted.
After the case keyword, you can only use a variable, number, or string.
Sample code:
var exp = 10;switch ( exp ) {case "10":console.log("string 10");break;case 10:console.log("number 10");break;case exp:console.log("var exp");break;default:console.log("default");}
Output:
number 10
for Statements
Example Syntax:
for (Statement; Statement; Statement)Statement;for (Statement; Statement; Statement) {Code block;}
Supports the use of break and continue keywords.
Sample code:
for (var i = 0; i < 3; ++i) {console.log(i);if( i >= 1) break;}
Output:
01
while Statements
Example Syntax:
while (Expression)Statement;while (Expression){Code block;}do {Code block;} while (Expression)
When expression is true, loop execute statement or code block.
Supports the use of break and continue keywords.
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