JavaScript 数据类型

2022-04-21
javascript

在JavaScript之中，主要分为四种数据类型，分别为数值(Numerical)、字符串(String)、数组(array)、对象(Object)

数值

<!DOCTYPE html>
<html>
<body>
<p id="data"></p>
<script>
	var legin = 1;
	document.getElementById('data').innerHTML = legin;
</script>
</body>
</html>

字符串

<!DOCTYPE html>
<html>
<body>
<p id="data"></p>
<script>
  var leigin = "Hello";
  document.getElementById('data').innerHTML = leigin;
</script>
</body>
</html>

数组

<p id="data"></p>
<script>
	var one = 10;
	var two = 20;
	var three = 30;
	document.getElementById('data').innerHTML = one + "<br>" + two + "<br>" + three;
</script>
</body>
</html>

对象

<body>
<script>
	var legin = {name: "flyday",
                 age: 21,
                 id: "Clockshan-Ot"};
	document.write(legin.name + "<br>");
	document.write(legin["age"] + "<br>");
</script>
</body>

ID	DA
1	数组
‘Hello’	字符串
one = 10	数组
{name: “flydat”}	对象

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