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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    <title>Function Declaration Example</title>
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    <script type="text/javascript">
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        alert(sum(10,10));    //20
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        function sum(num1, num2){
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            return num1 + num2;
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        }      
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​
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    </script>
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</head>
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<body>
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​
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</body>
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</html>