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"; }

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