实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>手册网教程(shouce.ren)</title>
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</head>
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<body>
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​
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<p>点击按钮列出数组的每个元素。</p>
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<button onclick="numbers.forEach(myFunction)">点我</button>
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<p id="demo"></p>
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​
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<script>
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demoP = document.getElementById("demo");
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var numbers = [4, 9, 16, 25];
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​
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function myFunction(item, index) {
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    demoP.innerHTML = demoP.innerHTML + "index[" + index + "]: " + item + "<br>";
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}
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</script>
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​
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</body>
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</html>