javaScript tutorial basics fundamentals ( data types string numbers objects null undefined )

- Javascript how to define a variable
- Javascript how to define a string
- Javascript how to define a number
- Javascript how to define a object
- Javascript how to define a null
- - Javascript what is undefined?
- Javascript what is null?
- Javascript how to write hexadecimal, octal, floating point, double, Boolean ,
- - Javascript how to add properties to an object
- Javascript how to properties to an array

Keywords:
JS, Javascript, java script, java script tutorial , javascript tutorial, js tutorial, HTML5, techsith, learning javascript, javascript 101, javascript how to get started, Javascript introduction, javascript fundamentals,

[urdoomarf]

Gotta say, this was a very professional, basic guide on JavaScript type usage. I was very impressed, as the speaker managed to speak slow and clearly enough to communicate effectively while transitioning through topics quickly enough to not notice the half hour runtime.

[sujeetrai]

Thank you very much Sir you explained so clearly

[sivakumar-tfmn]

it is very profeesional teaching i was very impressed

[paco]

"so if I haven't confused you enough" lol made me chuckle the way you said it

[doumejezreelniba]

i am trying to get over this event handler over some weeks now but i can't it keeps on displaying "SCRIPT5007: Unable to get property 'addEventListener' of undefined or null reference" in the browser console

[tiagovieira]

Hi techsith, if I may... To become good at javascript following your videos, I have to start with "JavaScript from scratch" then "Javascript fundamentals" then "advanced javascript tutorial"? In that order? I saw few of your videos and you explain very well but I have no idea where to start .

[dhineshmahe]

If I use square brackets for defining properties of objects with space, its showing me an error as Uncaught SyntaxError: Unexpected token [ ..., this is the statement I used var x["hey boy"]="hi";, where have i done mistake ?

[midhinaveen]

Hi Sir, I Have small doubt.
How we implement this is in real time project like promise, async await, callbacks

[Malfymsqrd]

Thank you for the lessons. There is a mistake at 7:27. You can't have "8" in octal system, I guess you meant "7".

[doumejezreelniba]

pls can someone provide a solution to this "SCRIPT5007: Unable to get property 'addEventListener' of undefined or null reference" which has been disturbing now over some weeks what do i need to do?

[caribbeanman]

NaN is like a valueless abstract number for any value that is not a number.

[paco]

do i need to learn the different integer types?

[nikitareddy]

am a beginner. all of my doubts are clear, i need to learn more about object and array.will you suggest me your other videos related to object and array and thanks to share this online code editor link (JsfIiddle.net)

[qqq]

i am using jsfiddle.net fro my android mobile. so how to get inspect element?

[dilChahta_hai]

Hi,
just confuse, can you tell me
var i = "Ash";
var k = Number(i);
alert(typeof(k)); why it is number? because we have used Number(i) it converts the i into number and it is now a number?

[igmtan]

please more upload video for javascript sir

[DJLNR]

NaN comes up when an object var has properties that could compute to a number like *_.length_* and other string methods.. I see NaN as a js helper to fix bugs fast as it makes you locate the error in your code faster to where you didn't parse a number to a method of function that depends on the calculation..

[shivarajgowda]

Why null is of type object in javascript?

[dilChahta_hai]

why below returns object object when i use document.write . in console it is okay.

var x = {};

x.p1 = "a";

x.p2 = "b";

document.write(x);

[rajeevmca]

could you please share this PPT with us ? Thank you.