JavaScript Array forEach examples
摘要: In JavaScript, we can use forEach(function) to loop an Array. The provided function in forEach() will run once for each array element.
In JavaScript, we can use forEach(function) to loop an Array. The provided function in forEach() will run once for each array element.
var total = 0;
var num = [1, 2, 3, 4, 5];
num.forEach(anyFunction)
function anyFunction(data){
total += data;
console.log(total); //15
var words = "";
var num = ["a", "b", "c", "d", "e"];
num.forEach(anyFunction2)
function anyFunction2(data, index){
words += data;
console.log(index + ":" + data); //0:a, 1:b, 2:c, 3:d, 4:e
console.log(words); //abcde
