// 使用forEach
let arr1= [2, "w", 3];
arr1.forEach(function(item){
console.log("item=" + item);
});
arr1.forEach(function(item,index){
console.log("arr["+index+"]=" + item);
});
// 使用forEach
let arr1= [2, "w", 3];
arr1.forEach(function(item){
console.log("item=" + item);
});
arr1.forEach(function(item,index){
console.log("arr["+index+"]=" + item);
});