JavaScript变量
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<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Document</title>
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<body>
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<script>
// 声明变量a并赋值
var a = 10;
var b = a * 10;
console.log(typeof b);
</script>
</html>