Function is a block of code where we write some tasks or a single task to do. Function run only when we call it. Sound confusing ?
If no then just skip next two slide/lines.
Do you remember using console.log ? What do you think this is ? When we pass something on the “” in console.log then we can see it is printing on the console right ? How this happens?
Actually there is some native parts of JavaScript. Where there is function and we call it using it and pass the value to show in the console. So we are already using the function right ? Do you understand now ?
Now writing function in JavaScript is really easy. Just start with function keyword. This is reserve keyword for initialing a function like we initial variable using var.
It is like giving name of variable. We’ll give a name after function keyword. Then function need some parameter to pass. We can leave it blank for now and our code will be –
function nameOfFunction() {
//Block of code
}
Now lets write a function –
See the result in browser console
Can you write some basic functions now ?
You can see the graphical version here
Source Codes - { Check commits }
nerdjfpb
/
javaScript-Series
A tutorial for JavaScript Beginners
javaScript-Series
A tutorial for Absolute Beginners of JavaScript.
You can find the total pdf in - Here
You can check the commits to find the part by part codes.
Blogs
Day 1
- Day 1 - What is JavaScript?
Day 2
- Day 2 - JavaScript Types?
Day 3
- Day 3 - Javascript Types Cont.
Day 4
- Day 4 - Javascript Types Cont.
Day 5
- Day 5 - Javascript Comparisons
Day 6
- Day 6 - Javascript Variables
Day 7
- Day 7 - More About Variables
Day 8
- Day 8 - Conditional Statement
Day 9
- Day 9 - More Conditional Statement
Day 10
- Day 10 - Switch
Day 11
- Day 11 - Setup Code Editor
Day 12
- Day 12 - Loops
Day 13
- Day 13 - While Loop
Day 14
- Day 14 - For Loop
Day 15
- Day 15 - For Vs While
Day 16
- Day 16 - Functions
Day 17
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