JavaScript
let name="Ravi";
let age=15;Page 8 of 30
Variable Declaration
JS let, C++ datatype, Python direct assign, PHP $ variable
1
Concept Meaning
Variable declaration means creating a variable and getting it ready to store a value.
2
Real-Life Analogy
Before using a storage box, we label it. Declaration is like creating and labeling the box.
3
Expected Output
Values are stored with proper names.
4
Common Mistake
Do not forget $ before PHP variable names.
Same Logic • Different Syntax
Code in 4 Languages
C++
string name="Ravi";
int age=15;Python
name="Ravi"
age=15PHP
<?php
$name="Ravi";
$age=15;
?>Memory Tip
Meaning same. Declaration style changes.