1. What is JavaScript? Features of JavaScript ? 2. What are the different data types present in javascript ?

March 4, 2023March 4, 2023 Discipline: Javascript
Learning Goal: I’m working on a javascript multi-part question and need the explanation and answer to help me learn.

1. What is JavaScript? Features of JavaScript ?2. What are the different data types present injavascript ?3. What is defined and undefined ?4. What is null ?5. How many ways to create JavaScript ?6. How many types of Operators in JavaScript ?7. Difference between “===” and “==” in JavaScript ?8. Write terinary operator syntax ?9. What is Loop ? Why we use loops and how manytypes of loops ?10. Explain dowhile loop ?11. Explain Nested loop with syntax ?12. How many types of conditions ? why we useconditons ?13. What is string ? How many types of strings ?14. List some String Methods ?15. Reverse a string ?let string = “AchieversIT”16. what is meant by lastIndexOf ?17. What is concat method do ?18. What is charCodeAt method do ?19. Difference between subStr and SubString ?20. What is Array ? How many types of Arrays ?21. List some Array Methods ?22. Difference between push and pop ?23. Difference between shift and unshift ?24. Difference between slice and splice ?30. What is Object ? How many ways to create aobject ? Create one object.31. How many ways to call a object in JavaScript ?33. How many selectors in JavaScript ?35. Explain var,let and const variables ?46. Is javascript a statically typed or a dynamicallytyped language ?49. What are some advantages of using ExternalJavaScript ?61. What is this [[[]]]?62. How do you empty an array in JavaScript?63. Can you tell me what is the Output.let s = 1+ +”1” =>output:-let k = 1+ +1 =>output:-let n = 1+””+1 =>output:-let m = “” +1+””+1 =>output:-let p = “1”+”1″ =>output:-64. let n = 1+ “1”console.log(typeOf(n)) =>output:-65. let p = 1+ +”1″console.log(typeOf(p)) =>output:-66.console.log(typeof(undefined)) =>output:-67.console.log(typeof(notdefined)) =>output:-68.console.log(typeof(null)) =>output:-69.console.log(typeof(array)) =>output:-70. Javascript is a object oriented programminglanguage or object based programming language ?

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