Detailed explanation of how to use switch statement in js

The switch statement is used to perform different actions based on different conditions.

The syntax format is as follows:

switch(表达式) {
   case n:
    代码块
    break;
   case n:
    代码块
    break;
   default:
    默认代码块
}

Code explanation:

Calculate the switch expression once;

Compare the value of the expression with the value of each case Compare;

If there is a match, execute the associated code.

is as follows:

switch (new Date().getDay()) {
  case 0:
    day = "星期天";
    break;
  case 1:
    day = "星期一";
     break;
  case 2:
    day = "星期二";
     break;
  case 3:
    day = "星期三";
     break;
  case 4:
    day = "星期四";
     break;
  case 5:
    day = "星期五";
     break;
  case 6:
    day = "星期六";
}

Recommended related tutorials: js tutorial

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