27 lines
422 B
HTML
27 lines
422 B
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>JS-基础语法</title>
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</head>
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<body>
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<script>
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// //声明的变量
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// var a = 10;
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// a = "hello js";
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// alert(a);
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//声明的常量
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const PI = 3.14;
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// PI = 5.0;
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// console.log(PI);
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document.write(PI);
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</script>
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</body>
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</html> |