JavaScript Video Tutorial Pt 6

In this part of the JavaScript Video tutorial I will introduce Regular Expressions. I go over all the JavaScript Regular Expression functions.

[derekbanas]

You're very welcome :) I thought faster tutorials would help many people learn easier. I'm happy you liked them. May God bless you and your family as well

[derekbanas]

@gkniffen I'm glad you liked it. It is a lot to take in. It's pretty much an entire semester of JavaScript in just 6 videos :)

[derekbanas]

Thank you :) That is the benefit of being a YouTube partner. I don't know why other people don't take the time to make them? I'm very happy to have been helpful

[derekbanas]

@dogdutyascetic You're welcome. Thanks for taking the time to say hi :)

[derekbanas]

Thank you :) I'm working on tutorials that teach how massive projects are made now. My UML, Object Oriented design, design patterns, refactoring, and algorithm tutorials cover all the high level stuff I think you are looking for. I hope you like them and if there is anything I should add feel free to tell me. Always feel free to ask questions

[derekbanas]

You're very welcome :) thanks for taking the time to tell me you liked them

[derekbanas]

Backslashes are used to create codes that represent letters, numbers, spaces, etc. I link to the code in the description. That may help

[derekbanas]

You're very welcome :) I'm glad you enjoyed it

[derekbanas]

There are many things I don't know, but I feel comfortable I could learn most anything pretty quickly. I've forgotten assembly and would have a lot of trouble building something like a graphics engine. Of course their are new frameworks introduced constantly that I haven't had time to learn. I'm no genius, but I do enjoy learning and I think that helps you learn easily :)

[derekbanas]

@roberterwin24 A variable just stores a value. A function does something with variables. So if x and y are variables. Then a function that adds x + y and then returns the result would be a function.

[derekbanas]

. – Represents any 1 character except a newline
So if you want to search for a period you have to tell the regex processor that you are looking for a period and not any one character. You do that with a backslash

[derekbanas]

Because a dot is used when defining a regular expression. To define that I'm looking for a real period I have to escape the period with a backslash

[derekbanas]

Thank you very much :) I'm very happy to be able to help and good luck with your exam

[derekbanas]

@PajamaFreak You're welcome :) I just have Google Chrome opened to the side of the screen

[ronniej]

I can't believe that I am able to watched 1-6 video tutorials . Awesome

[BhagyeshSoni]

Mr. Derek Banas,
Thank you very much for your videos. Its really nice to recollect in a fast track mode.
Very helpful. God Bless you..

[derekbanas]

Sorry about that, I only made sure the regex would work if there was one dot in the domain. I can get you one that works with yours if you need it?

[zazzyfrazzy]

Your videos are AMAZING! They have really helped to understand JavaScript for my exam tomorrow.
You seriously saved me from failing
Thank you so much :)

[RPQM]

Thanks again for the videos, I appreciate the quick pace. I wanted to mention you need the 'g' modifier if you want successive calls to exec to return the next match. Otherwise it just keeps returning the first match.

var regexPat = /\d{3, 5}/g; // 'g' is NEEDED for iterative exec() calls.
var regMatch = regexPat.exec(longStr);
while (regMatch) {
document.write("regMatch: " + regMatch + br);
regMatch = regexPat.exec(longStr);
}

Without the 'g' it's an infinite loop.

[ardoren]

Very cool little tutorial. In 10 mins you can quickly learn or recall everything you basically need to build/understand a regex. Thank you !