- <!DOCTYPE html>
- <HTML lang="en">
- <head>
- <meta charset="UTF-8">
- <title>
- forEach 的用法
- </title>
- </head>
- <body>
- <span id="number">
- </span>
- <input type="text" id="mul">
- <button onclick="arr1.forEach(myFunction)">
- 点击计算
- </button>
- <p>
- 计算后的结果:
- <span id="mulres">
- </span>
- </p>
- <script>
- var num = 0;
- var arr = [2, 3, 123, 67, 89, 34];
- function myFuc(item) { // 数组中每个元素需要调用的函数
- num += item;
- document.getElementById('number').innerHTML = num;
- }
- // console.log(arr.forEach(myFuc));
- var arr1 = [3, 4, 22, 1, 3, 78];
- function myFunction(item, index, arr) {
- arr[index] = item * document.getElementById('mul').value;
- document.getElementById('mulres').innerHTML = arr1;
- }
- </script>
- </body>
- </HTML>
来源: http://www.bubuko.com/infodetail-2802656.html