The JavaScript syntax defines two types of values:
- Fixed values
- Variable values
Fixed values are called Literals.
Variable values are called Variables
JavaScript is Case Sensitive
All JavaScript identifiers are case sensitive.
The variables lastName and lastname, are two different variables:
Example :
<!DOCTYPE html>
<html>
<body>
<h2>JavaScript is Case Sensitive</h2>
<p>Try to change lastName to lastname.</p>
<p id=”demo”></p>
<script>
let lastname, lastName;
lastName = “Doe”;
lastname = “Peterson”;
document.getElementById(“demo”).innerHTML = lastName;
</script>
</body>
</html>
Output
JavaScript is Case Sensitive
Try to change lastName to lastname.
Doe
Description :
In JavaScript, syntax refers to the set of rules that define the structure of valid statements and expressions in the language. It’s the grammar of JavaScript that determines how the code should be written to function properly.
