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<!DOCTYPE html>
<html>
<title>JavaScript 重新声明同一个变量示例 - 基础教程(div.cn)</title>
<body>
<p>如果您重新声明一个JavaScript变量,它将不会丢失其值:</p>
<p id="para"></p>
<script>
var city = "New Delhi";
var city;
document.getElementById("para").innerHTML = city;
</script>
</body>
</html>