Js 循环总结

Posted 2020-12-18 essaycode

for(let i=0;i<5;i++){

//循环内容

}

 map遍历

var arr = [0,1,2,3,4];
var str = arr.map(function(i,index,arr){
    console.log(this);
    return ++i;
},this);
console.log(str);  //结果为 [1,2,3,4,5]ils/100097931