TechoSwag

Hello Guys, In this blog we are going to learn about "===" and "==" different with details understanding and examples. JavaScript operators that you might have stumbled upon as a developer include "===", "==". JavaScript's "==" operator is commonly utilized for loose comparison purposes.  It functions by converting both of the values to a common type and then comparing them for equality.  Here's an example: The comparison operator "==" transforms the value of "17" from a string to a number before determining if the values match.  Consequently, if both versions of the data share the same properties and values, the comparison is marked as valid and returns true. The results of the "==" operator can occasionally be surprising, including: The comparison returns true when the "==" operator converts the empty string to the number 0 and compares it to the number 0.  This can result in bugs, so

Hi Guys, In this blog we are going to learn about map() method in JavaScript with detail understanding and examples. Map() :-  The map() method is one of the most critical tools in JavaScript programming. Its objective is to apply a function to every element present in an array, resulting in a new collection of effects. The method is highly valued by developers, and in this piece, we will investigate this method, delve into its mechanics, explore its syntax, and provide practical examples. The new array containing results is generated by calling the map() method on an array with a callback function applied to each element. The callback function can be passed as an argument and is executed during the process. For the map() method, the syntax is established as follows: When using the map() method, the the current element being processed, the array that the method was called on, and the index of the current element are passed as arguments to the callback function. It is also possible to u

Hey Guys, In this blog we are going to learn about How we can use Lazy-loading in angular with examples. We are also going to learn the different syntax of lazy loading in angular . Lazy loading is used to load the specified module once the routes match. It will load the modules once use access that particular section or modules in our application. Using lazy loading will improve the performance of our application and also decrease the load time of our application. Using lazy-loading will help to reduce the bundle size of the application. Lazy -loading Old syntax in angular 7 or lower version          {                path: "feature",                loadChildren:'./feature-module/feature-module.module#FeatureModuleModule'          }, Lazy -loading new syntax in angular 8+   {     path:'feature',     loadChildren:() =>  import('./feature-module/feature-module.module').then(m => m.FeatureModuleModule)   } For example, Let's say we create a mo

Hey Guys, in this blog we are going to learn about What is the different between   LET and CONST key word ( ES 6)    with examples  Let's get started... LET: Let  key word now we are using for  declaring variables . It's not like a surprise because it's come with improvement of  VAR  keywords. In  Let , we can declare variables like we are declaring using the  VAR keyword  but in  LET  keyword we cannot re-declare that variables like below. but we can change the value of variable like beow CONST: In  CONST  keyword we are using when we have  static value.  Let assume you have one value that  not going to change anywhere in the function of the file  in that case we can use  CONST  Keywords. we can not re-declare const variable and we can not update const keyword value like below. but we can use it like below. If you guys have any query then you can drop a mail to us on this mail id: techoswag@gmail.com

  Hey Guys, in this blog we are going to learn about What is Java Script Arrow Functions and how we can use it. Let's get started... - Arrow function has been introduced in the ES 6. - Arrow function allow us to write function shortly and simply. Arrow function looks like below const funcName = (arg1, arg2, arg3, ..., argN) => expression - Basically above expression means is it creates a  function  with  name: funcName  with the  arg1, arg2, ar3,...,argN  and after that, it's evaluate the  expression  and  return the results . - Let's take a simple example let's print the sum of two number using arrow function. In this example as you can see here function name is  sums  and it's take  two arguments x and y   and it's evaluate  expression ( x+ y )  and based on evaluation it will return result so here it will return  result 25. - Suppose if in any example if we have only  one parameter  so in that case we can  omitted parentheses  from pa

Today we are going to learn about Angular Basics  Let's get start... What is Angular         -    Angular is TypeScript Based open-source front-end platform.          -    Using angular we can create our application on the web and mobile side.         -    Angular is created and managed by Google.         -    It provides some features like component, directive, module, services, and end to                 end tooling. Features of Angular 1. DOM ( Document Object Model ) 2. TS ( Type-Script ) 3. Data Binding 4. Testing 1. DOM ( Document Object Model )    - In Angular, we are using regular DOM.   - Suppose we are updating 6 instances on the same HTML page.     In that case, angular is going to update the entire tree structure of HTML tags.   2. TS ( Type-Script )   - TypeScript is the superset of JS ( Javascript ).  - In the browser, It’s compiled into Plan JavaScript.  - TypeScript is created and managed by Microsoft. It provides some    feat

Java-Script Rest and Spread Operators:  In JavaScript, we are using three dots ( ... ) for both REST and SPREAD Operators. But these two operators are not the same they both have a different purpose. REST Operator - Purpose of this operator is to collect all remaining elements into the array. - For Example:           - let take one array in below example      - O/P :       Necklace [ 'Earring', 'Payal', 'Brooch', 'Bangles']   - In the Above example three-dot contain the rest of the product time in the restProdcut variable that calls Destructuring that breaks our code into small pieces.   - so in the above example, mainProduct variable contains my Main product and restProduct varibale contains my rest products.   - The rest operator always gives rest data into array format only.   - while creating function we can also use rest operator like below SPREAD Operator:  - It's work opposite to rest operators, like in rest operator we are collecting item