1、标准的for循环
var array = [1,2,3,4,5,6,7];
for (var i = 0; i < array.length; i) {
console.log(i,array[i]);
} var array = [1,2,3,4,5,6,7];
var array = [1,2,3,4,5,6,7];
for (var i = 0; i < array.length; i) {
console.log(i,array[i]);
} var array = [1,2,3,4,5,6,7];