38 lines
730 B
HTML
38 lines
730 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-数据类型</title>
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</head>
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<body>
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<script>
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//1. 数据类型
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// alert(typeof 10);
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// alert(typeof 1.5);
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// alert(typeof true);
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// alert(typeof false);
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// alert(typeof "Hello");
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// alert(typeof 'JS');
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// alert(typeof `JavaScript`);
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// alert(typeof null);
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// let a ;
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// alert(typeof a);
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// 2.模板字符串
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let name = `小王`;
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let age = 18;
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console.log(`我是${name},我今年${age}岁`);
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console.log('我是' + name + '，我今年' + age + '岁');
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</script>
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</body>
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</html> |