HTML file :
<HTML>
<HEAD>
<Title>Testing</Title>
</HEAD>
<Body>
<script src="Test.js" language="JavaScript" type="Text/JavaScript" >
CreateVariables();
document.write(glVarMsg3);
</script>
</Body>
</HTML>
.js file:
function CreateVariables()
glVarMsg3="Global variable";
Friends please inform me what is the issue in this script? why i can't be able to access variable from .js file?
Firstly, that's invalid syntax for declaring a function. You need braces:
function CreateVariables() {
glVarMsg3="Global variable";
}
Secondly you can either set an src or script content, but not both. So you'd need:
<script src="Test.js"></script>
<script>
CreateVariables();
console.log(glVarMsg3);
</script>
A good place to start would be this MDN article on functions. Additionally, I hope this is just for learning/testing as the use of document.write and global variables in this way is discouraged.
var, it's implicitly declared at global scope. Please see updated answerJust define your variables in global.js outside a function scope:
// global.js
var global1 = "I'm a global!";
var global2 = "So am I!";
// other js-file
function testGlobal () {
alert(global1);
}
first just import
<script src="Test.js">
</script>
after use
<script>
CreateVariables();
document.write(glVarMsg3);
</script>
