WEB TECHNOLOGIES | UNIT-3 FULL EXPLANATION | OSMANIA UNIVERSITY | 💯 PASS SEM-4 |‎⁨@shivanipallela⁩

Added: 2026-06-01

[00:00:01]All welcome back to our channel. So, students in this video we will discuss unit number three web technology subject, okay? So, by watching this video you can easily score 10 marks weightage from this unit. That is eight marks is long question, two marks one definite short questions you will get, okay? So, detailed explanation video I will give in this video, okay? So, detailed explanation video I will give. So, don't skip the video and watch till the end then only will understand. And after watching this video let me know in the comment section how you felt about the explanation video. And our channel is near to 50k subscribers. Just finish 50k subscribers if you like this video, okay? So, just share with all your friends and groups and tell them to subscribe to our channel because they will also get benefited. So, without getting late let's get into the video, uh. So, first question you are having, what are the various types of data types you are having in JavaScript? Okay? So, firstly what is a data type? It is used to indicate the type of data valued.

[00:01:08]Whatever the data values we will store in the JavaScript, it will have some character or any variable or any numerical thing, okay? 1 2 3 4 a b c d, anything we will have. So, that type of data is known as data type. a b c d sign up 1 2 3 4 sign up is a variable thing we will store in the data. That type of things is called as data type, okay? So, what are the data types you are having in JavaScript? JavaScript can be classified into four types, okay? What are that four types? First one is boolean.

[00:01:48]Second one is uh string data type, third one is null data type, fourth one is number data type.

[00:01:57]So, this is the four types of data types we are having in JavaScript, okay? So, we need to explain each and everything.

[00:02:04]You need to elaborate the answers in both the pages. Front and back, you need to write it for eight marks. So, compulsory below that do you don't reduce the answer, okay? So, boolean data type. What is this boolean data type? The data type consists of two logical values. What are the logical values? Either true or false, okay?

[00:02:26]Either true it will be it be, either false it might be either it true it might be might be, okay? So, this is the logical values which we will provide is known as boolean data type. Next you will have string data type. String data type is used for the inverted commas.

[00:02:45]The information will be made in a inverted commas written in double quotes. So, double quotes if you are written in means that is a type of string data type. In this data type of JavaScript, information is written in double quotes. See here I have drawn some picture. You need to draw it here, okay? So, here the example true or false also you need to write it in the examination answer. And the third question is null data type. Null data type means nothing. The value is zero.

[00:03:15]Whether he or she feels it does not want to initialize the value, then it is called as a null hypothesis.

[00:03:23]Got it? Nothing will be there in null hypothesis. Only brackets you will have.

[00:03:27]That is called null hypothesis. And the last one is number data type. Whatever the numbers we are using 1 2 3 4, that is called as number data type. The opposite of string data type, the value is declared without double quotes, okay?

[00:03:43]Without double quotes value will be written. And that is a number. See here variance number 30, variance quality quantity 65.75 salary 50. This type of the we will use it by numbers only, no?

[00:03:57]So, that is the number data type. Got it, students? Next, you are having operators in uh JavaScript. What are the different types of operators we are having? So, this is the second and the last question from unit number two I have given, ma.

[00:04:12]So, what is a operator? Operator is a symbol that performs some operations.

[00:04:17]Any mathematical operations, arithmetical operations, logical operations. If we want to perform in the JavaScript, means that is called the operator. An operator will do all the calculation uh purpose. Okay, what are the different types of operators we are having, ma?

[00:04:35]There are mainly five types of operators. Arithmetic operator, assignment operator, relational operator, logical operator, and bitwise operator. You need to remember the side headings compulsory.

[00:04:48]Got it? So, compulsory you need to remember the side heading. The first one is arithmetic operator. In arithmetic operator, what are the things we will have? Addition, subtraction, division, multiplication. Modulus is nothing but percentage, increment, decrement.

[00:05:05]Addition is plus, uh subtraction minus, into, division, percentage. Increment means double plus. Decrement means double minus, okay? So, that is the symbols you need to write it here.

[00:05:17]Compulsory you need to write it the answer like this only. Next, you will have assignment operator. What does this assignment operator will do? It will assign the values to variables. See, here I have drawn some uh table. Here you see uh plus equal to, minus equal to, multiplication equal to, increment equal to, decrement equal to. So, this is the example. This is the operators in assignment, okay? Assignment operators is plus equal, minus equal, multiplication equal, division equal, increment equal, decrement equal. That is the assignment operator and this is the examples, okay? So, you can write it by down also. You need to elaborate the answer anyway. So, and the third one you are having relational operator, ma.

[00:06:03]Relational operator is nothing but these operators are used to test the relations. What it will What relations it will do? Equal double equal to, not equal to, okay? Double equal to, not equal to, identical, non-identical, okay? So, less than, greater than, less than equal to, greater than equal to. This type of symbols will be performed in relational operator. Okay, if you are remembering this operators means you can elaborate the answers by your own, okay?

[00:06:35]And fourth one you are having logical operators. Logical operators is nothing but double and double exclamation mark, okay? Slashes.

[00:06:45]If you are using this type of operators means then we will call it as a logical operator. And the last one you are having, ma, bitwise operator. What does this bitwise operator? When you want to use and or not, less than greater than equal to, less than equal to, okay? Left shift, okay? This type of performances of operators if you want to perform means you that is known as bitwise operator. If you want and in any program in JavaScript means you will use bitwise operators. So, these two questions is enough from unit number three, ma. So, this is all about the video. If you like this video then do like, share, comment and subscribe to our channel and share with all your friends and groups because our channel is near to 50K.

[00:07:32]Everybody is watching but some of people are not subscribing. 70% of our viewers are not subscribed. So, let us finish 50K subscribers. I am expecting this only from you all. So, if you think that this video is worthy, then do subscribe and share with all your friends and girls. Okay, see you all in next video.

[00:07:49]All the very best for your examination.

[00:07:51]Bye-bye, students.