JavaScript Tutorial For Beginners #16 - While Loops
ฝัง
- เผยแพร่เมื่อ 16 ส.ค. 2015
- Yo Ninjas, in this JavaScript tutorial I'll be introducing the concept of looping in JS. More specifically, we'll be taking a look at the while loop - the most basic form of loops.
JavaScript loops are a way of repeating sections of code over and over, so that you're not having to re-write code again and again manually. For as long as a specified condition is true, the loop will continue to execute your code.
Be careful not to cause an infinite loop! This can crash your computer.
As always, any questions, fire away :).
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I want to say (on the beginner rights) it's been very well explained compare to other sources! The most difficult part of learning javascript is to find a good source to learn from!
That is so true! Kudos for you.
I am so happy I can cry right now.
age++, the key that I was missing.
I never realised that with (i=0; i
I cannot begin to tell you how much this has helped as a supplement to my Odin Project/Freecodecamp curriculum. Thanks so much Shaun!
wow i am beginning to love this guy tutorials,i'm always trying to understand the while loop but your explanation made me understand it. Thank you so much Net Ninja
dope video man... simple and very clear explanation! and i see u got active videos subbed
Clear and concise as always. Your videos are the best.
Man, can't thank you enough you explain things so clearly and well for me to understand ❤️
Best tutorials, Ever! Thank you so much!
wow you solved my frustration! thanks! I've been stuck on the while loop for a while. great video!
I see what you did there 😂
Very clear explanation on while loops! Thank you for making it so clear!
This is the Best JavaScript tutorial ever on TH-cam. Well constructed course structure for easy understanding. Brilliant educative step by step lessons for beginners. Well done mate. Thanks
Thanks so much man, much appreciated!
i was so confused on FreeCodeCamp.. Thanks for such a good vid!
Great tutorials man! Love the satisfying clicks of your mouse tho!
Omg your teaching just clicks for some reason, bravo!
Makes so much sense, thank you!
Thanks for the video! I was completely stuck on how to do while loops prior to watching it!
Thank you so much for this! Simple and clear explanation!
Great tutorial - thanks for sharing!
Nice and clear, cheers!
Thanks for explaining this! Saw that you are active as well and immediately subbed.
Now I finally get it! Thanks a lot!
Great and unique clarification. Thank you!
Thank you very much for explaining it so simply
Simple enough. Am getting the hang of coding faster then I thought !
Thanks bro, this was really helpful!
Wow, m8, finally got it. Thanks for the perfect explanation.
No problem, glad it was helpful Pavle 👍
You are genius bro!
Thanks! it really was helpful!
YOUR VIDEOS HAVE HELPED ME SO MUCHHHH SO THANK YOU VERY MUCHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
welcome mate
Best videos i have found on the subject, so simple a mare child could understand and that is exactly what you want with a guide. Started my way with codeacademy which was good but i get a much better understanding in a whole with these vids, recomended for everyone that are new to javascript! Big ups to this dude!!! Sub him, he deserves more.
Oh my word!! I just sent him a similar message and just saw yours! It’s so true!! I’m doing freecodecamp but I always end up here!
love your videos
YAY I FINALLY UNDERSTAND!
Wonderful man!! Excellant🎉
Thanks a lot! :) glad it was helpful
var enemies =10;
while (enemies > 0) {
document.write ("Engaging enemies!");
enemies--;
}
document.write("All enemies destroyed");
Thank you for your vid! and what about while loop with if? I'm stuck on one...
1:22 That will crush your coumputer...so, I'll show you that in a second. :D
Great videos, though! Thanks!
lol
I didn't understand the age++ part. To be more specific, I didn't understand how/when is this loop going to take place, exactly? You said if we don't use "age++" it will cause the computer to crash. But how/when exactly does that age change? In other words, how long does it take for this specific loop to "go around" ???
Thanks a lot for the very useful tutorial. Im really enjoying it!!! Thank you!!!
Thank you
The Net Ninja what text editor you using??
Ivan brought me here.
same bro ! haha
Thanks.
How do you make a while loop for multiple conditions?
Like a while loop for if age < 21 AND userDrinkSelection = alcoholic
{
then run some code
}
thank you
Better explanation than Colt Steele
Ronniel Javier yes! I was doing his Udemy course and I didn’t understand it until now.
Great video! You explain JS so much better than my professor. Anyway minor minor error spotted: I think the very last line of code should be
document.write("You are now at least 10 years old!");
since 10 is not over 10 haha. Cheers from Singapore!
I wished this tutorial on the top of 'while loop javascript tutorial' keyword search. we are overcrowded with long and complicated videos
I remember in Messenger on Yahoo. The alert box loops. hmmm.
What's the difference between a while-loop and a for-loop?
what does this do again?
Hey net ninja please correct me if I'm wrong but if age is equal to 10 wouldn't the document.write message be wrong Since 10 is not less that 10
I mean this could just be a for loop, right? I was hoping for maybe a while loop that's reliant on something being true or false. It was just hard to concentrate on under what circumstances I might use a while loop when it didn't feel necessary. If you see what I mean? I do think you explained things clearly in this particular example. But, I think I need to keep looking for examples.
Hi , i really like watching your videos altought my english is not good enough to understand everything ur saying. can you add subtitles in turkish? i'm pretty sure all of your turkish fans will appreciate this and you will get more view. Thank you for attendion.
What if you want to multiply it by 2 for example how would you do that?
Do you mean multiply the age variable by 2 every iteration?
That would be: age *= 2;
hey ninja wen to use while-loop please rply
what is the difference between "for loop" and "while loop"?
While loop is used in situations where we do not know how many times loop needs to be excuted beforehand.
For loop is used where we already know about the number of times loop needs to be excuted. Typically for a index used in iteration.
how would you double a variable every 7 days?
When & why to use console.log & Document.write & difference between them please reply
I am watching currently whole playlist of JS
console.log will write on the console on the side whereas document.write will write on the browser.
Here also, you can use document.write instead of console.log but then it will print " your age is less than 10" five times on the browser.
There are no necessary conditions in which to use the console.log. You can use it if you don't want the viewer to see something, then you can get it to print on the console using console.log.
the net ninja answered a similar question in the comments. here it is:
Mortdecai Rigby
What is and in what circumstances console.log is usable?
The Net Ninja
Hey, you'd use it maybe to debug your JS as you're working on something, to check the value of a variable, or just to test the functionality. It comes in handy :)
hope this helped :)
nice
What is and in what circumstances console.log i usable?
Hey, you'd use it maybe to debug your JS as you're working on something, to check the value of a variable, or just to test the functionality. It comes in handy :)
We can do that by if else.
can you please tell how you run the code in chrome?
Ashwini Abhishek Open an HTML file and select File > Live Preview ( or click the "lightning bolt" icon). Brackets will launch Chrome and open your file in a new tab.
YO WHATS GOING ON GUYS!! NET NINJA FAMILY!! LETS GO!
I need this to delete all rows of table.
Oct 16, 2019
great tutorial but please can you tell how to do it in notepad
Thanks bro.. May Allah bless u..
Northern accents are oddly appropriate for voices of authority (I'm southern).
But what about those age
🔝
Ivan brought me here.