Define a variable outside a function and can change its value in a function in JavaScript
Description
The following code shows how to define a variable outside a function and can change its value in a function.
Example
<!--from www . java 2 s .co m-->
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">
var name = "blue";
function changeName(){
if (name === "blue"){
name = "red";
} else {
name = "blue";
}
}
changeName();
document.writeln(name);//red
</script>
</head>
<body>
</body>
</html>
The code above generates the following result.
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