Marusya's School Notes

Global JavaScript Scope

A variable declared outside a function, becomes GLOBAL. A global variable has global scope: All scripts and functions on a web page can access it.

   var carName = " Volvo";
     // code here can use carName
  function myFunction() {
     // code here can use carName
   }

HTML file:	Displayed by browser:
<body> <p>A GLOBAL variable can be accessed from any script or function.</p> <p id="demo">First Display Here</p> <p id="demo1">Second Display Here</p> <script> var carName = "Volvo"; document.getElementById("demo").innerHTML = "I can display " + carName + " (1st Highlight)"; myFunction(); function myFunction() { document.getElementById("demo1").innerHTML = "I can display " + carName+ " (2nd Highlight)"; } </script> </body>	A GLOBAL variable can be accessed from any script or function. First Display Here Second Display Here

HTML file:

Displayed by browser:

<body>
<p>A GLOBAL variable can be accessed from any script or function.</p>
<p id="demo">First Display Here</p>
<p id="demo1">Second Display Here</p>
<script>
  var carName = "Volvo";
   document.getElementById("demo").innerHTML =
   "I can display " + carName + " (1st Highlight)";
  myFunction();
   function myFunction() {
   document.getElementById("demo1").innerHTML =
   "I can display " + carName+ " (2nd Highlight)";
  }
</script>
</body>

A GLOBAL variable can be accessed from any script or function.

First Display Here

Second Display Here

I think I get it.