Top Necessary Things You Must Know in Javascript
A noob can learn and practice JavaScript without large hassle and effort. Despite being a lightweight scripting language, JavaScript is both object-oriented and cross-platform. It is always important for beginners to know some of the most important components of JavaScript.
- Variables
Variable is the very initial thing in every programming language. In javascript variable is declared by the “var” keyword; though it changed in modern javascript into “const” and “let”. But initially, var keyword is applied for initiating a variable.
In JavaScript, variables can represent and manipulate with 3 primitive data types, i.e., string, numbers and Boolean.
var x;
var name = 'Mr. y';
2) Operators
You can use four types of operators in Javascript.
They are,
- arithmetic [+, -, *, /, %, ++ and — ]
- comparison
a. == (equal)
b. != (not equal)
c. > (greater than)
d. < (less then)
e. >= (greater than or equal to)
f. <= (less than or equal to)]
3. logical
a. && (logical AND)
b. || (logical OR)
c. ! (logical NOT)