JavaScript infographic - 01
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Transcript of JavaScript infographic - 01
Double slash // Between /* and */
Var tells browser to create new
variables
var x=5+6;
var y=x*9;
Keywords are used to
identify action to be perform.
50 An expression is a combination of values, values and operators
which computes a value
JavaScript is the most popular programming language in the world.
A programming language is a formal constructed language designed to
communicate instructions to a machine,
particularly a computer.
• In <head> and <body> using <script>…</script>
• In an external file <script src=“file.js”>…</script>
• Alert box: window.alert() • HTML Doccument: document.write() • HTML Element: innerHTML.* • Console: console.log()
Values Operators Expressions Keywords Comments
Values
Fixed Values
Variable values
literates variables
10.05; 1001; ‘afk’;
var x ; x = 6 ; In programming language,
Variables are used to store data values. semicolon
Statement terminator
It separates statements
; Values
Assignment operator
Arithmetic operators
To assign values to variables
= 1. var x = 5; 2. var y = “afkTech”;
To compute values
+ - * /
1. (5+6)*10; 2. ((2+3)/3)*2;
Expression 5*10
x*10
x*y
“a”+ “ ”+ “F” + “ ” + “K” a F K
20
6
var x =2;
var x=2; var y=3;
Keywords
Non executables in code
Comments
o A must learn language for web development
o Most popular programming language o Easy to learn ! [relatively :p ]
JavaScript Infographics -01
Made by Kingshuk with love in Bangladesh
www.Jontrojog.com www.fb.com/groups/JPC.public
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Special thanks to W3Schools.com and 10MinutesSchool