JavaScript Maps - All you need to Know / JavaScript Complete Map tutorial

JavaScript Maps - All you need to Know / JavaScript Complete Map tutorial Code: // the map obj holds key-value pairs //Creating a Map let myMapTest = new Map() //Map Size console.log(myMapTest.size) //Set Values for map myMapTest.set(1,"Test1") myMapTest.set(2,"Test2") myMapTest.set(3,"Test3") //Printing the Map console.log(myMapTest) //creating an Object let obj = { "size":1 } //Getting the map values based on GET console.log(myMapTest.get(1)) //key value pairs of Map for (let [key,value] of myMapTest){ console.log(`${key} : ${value}`) } //Using entries for (let [key,value] of myMapTest.entries()){ console.log(`${key} : ${value}`) } //Using has method console.log(myMapTest.has(0)) //Using ForEach Map method myMapTest.forEach((value)= console.log(`${value}`)) // arrow function //Deleting a key in Map myMapTest.delete(1) console.log(myMapTest) //Loop for deleting Keys for (let key of myMapTest.keys()){ myMapTest.delete(key) } Description: Maps in javascript JavaScript Map and Set Explained JavaScript Array Map JavaScript Higher Order Functions & Arrays JavaScript Maps | JavaScript Tutorial In Hindi Map in Javascript map Array Method | JavaScript Tutorial Chapters: 0:00 - Introduction 0:56 - Map creation and its size 1:45 - Map set method 3:10 - Creating a simple object to show its difference with Maps 4:44 - Map get method and key value pairs 6:29 - Map clear method 7:12 - Map delete method 8:55 - Map entries method 10:18 - Map has method 11:01 - Map for each method 12:54 - End Tags and subscription to channel Next Steps : --------------------------------------------------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------------------------------------------------------- Must Watch Playlists ► 1. Javascript - https://youtube.com/playlist?list=PLO2l2fYgN805CokP5kaOWOhqP3-2vyXdS ► 2. Puppetter - https://youtube.com/playlist?list=PLO2l2fYgN805E5fbSnvtFM3K9c92ePS8e ► 3. Cypress - https://youtube.com/playlist?list=PLO2l2fYgN807KRpLfvvrqa1MSX8XdYxkV ► 4. Tech works - https://www.youtube.com/watch?v=ZNAdt4Oe5Sw&list=PLO2l2fYgN807CQ5H3ER__7x7LeEA10T2Z ► 5. Vbscript Basics To Advanced - https://www.youtube.com/watch?v=z_ctZDolyG0&list=PLO2l2fYgN805CuD-90ESrxRqX__-YJMym ► 6. Jmeter - https://youtube.com/playlist?list=PLO2l2fYgN806eNr5cr-TMTX8xGTW7Mtcn ► 7. Excel - https://youtube.com/playlist?list=PLO2l2fYgN806piZ2fD0bYNi3ExoPJlcqj ► 8. Appium - https://www.youtube.com/playlist?list=PLO2l2fYgN806V_9-wL-dpmrGg8dhPPONK ► 9. Shares - https://youtube.com/playlist?list=PLO2l2fYgN806ySmKp3sskJW0ByJalmPE2 ► 10. Javascript Interview Questions -https://youtube.com/playlist?list=PLO2l2fYgN807uZl7Mp7ESavluzVU25ux9 ► 11. C# Tutorials - https://www.youtube.com/playlist?list=PLO2l2fYgN805Dct9KbYNYC8nGOzwKjklt --------------------------------------------------------------------------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------------------------------------------------------------------------- #maps #javascript #javascriptHIgherOrderFunctions

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