tencent cloud

PrevNext

Feedback

search by keyword

Recent Pages

Documentation
Tencent Cloud Mini Program Platform
    Documentation
    Download PDF

    Statements

    Last updated: 2024-07-12 16:55:12
    Download PDF

      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 ... else
      
      if (Expression) Statement;
      else Statement;
      
      if (Expression)
        Statement;
      else
        Statement;
      
      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:
      0
      1

      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.
      
      
      Contact Us

      Contact our sales team or business advisors to help your business.

      Contact Us
      Technical Support

      Open a ticket if you're looking for further assistance. Our Ticket is 7x24 avaliable.

      Submit a Ticket
      7x24 Phone Support
      Copyright © 2013-2024 Tencent Cloud. All Rights Reserved.
      Privacy PolicyLegalCookie Policy