Js基本语法-05之 控制流

/*
*
* Js基本语法-05之 控制流
*          ·while
*          ·for
*          ·Array
*               ·map
*               ·forEach
*
*
*
* */
let b= 0;
// this is a while loop
while (b<3){
    console.log("while loop:",b);
    b++
}

// this is a for loop
for (var a = 0; a < 3; a++){
    console.log("for loop:",a);
}


// Array can also loop
var arr = [1,2,3];
console.log(arr.map(d => d+2))
arr.forEach(d => console.log(d))