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>
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            Number Example 4
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        </title>
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        <script type="text/javascript">
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            var num1 = Number("Hello world!"); //NaN
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            var num2 = Number(""); //0
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            var num3 = Number("000011"); //11
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            var num4 = Number(true); //1
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            alert(num1);
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            alert(num2);
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            alert(num3);
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            alert(num4);
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        </script>
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    </head>
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    <body>
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    </body>
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</html>