In last lesson we learn about the while loop, but there is a another loop which is really popular and people use this. So we’re going to learn it too.
Suppose we are going to print 1 to 10 on the console. But how we can do it ? We can do it easily
console.log(1)
console.log(2)
...
console.log(9)
console.log(10)
But this is not a good way to do it. Currently we can do it because it’s only ten times. But suppose we need to print 1 – 100. How to do it ?
This is where we use loops. We’re going to use For loop today!
For is easy. Just remember what we learned in our last tutorial. For loop syntax is –
for (initial, condition, increment/decrement/rulesBreaking) {
// code block to be executed
}
Let’s write some real codes now. If we wants to print 1 – 10 then we are going to store the values in variable and we are going to start from 1. We can directly do this part in for first part!
Now we are going to start our for. For then first part will be initial of the number, then condition for breaking the loop and final part will be how we can break the loop.
for (var number = 1; number < 11; number++) {
// code block to be executed
console.log('Printed number - ', number)
}
By the way did you notice that I used number++ ? What that’s mean ?
number++ = (number = number + 1) same thing. number++ is just a shortcut way to write it.
See the result in browser.
Do you understand the For loop ?
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
Originally it published on nerdjfpbblog. You can connect with me in twitter or linkedin!
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