do{}while() 循环
do{}while() 循环至少会循环一次:
语法如下:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>DEMO - Lik</title>
</head>
<body>
<script>
var a = 0;
do{
a++;
console.log(a);
}while(a<5);
</script>
</body>
</html>
控制台会输出:

author:Lik
Endeavoring to powerless, struggling to move yourself.
Endeavoring to powerless, struggling to move yourself.

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