tryjs_variable 在线代码实例

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运行代码

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<!DOCTYPE html>
<html>
<body>
<script>
var firstname;
firstname="Hege";
document.write(firstname);
document.write("<br>");
firstname="Tove";
document.write(firstname);
</script>
<p>The script above declares a variable,
assigns a value to it, displays the value, changes the value,
and displays the value again.</p>
</body>
</html>
 
 
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运行结果
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