// CLASS TOPICS : FEW METHOD OF DATA TYPES
// TO LOWER CASE
// myVal = "HELLO".toLowerCase()
// console.log(myVal);
// it will convert whole string to lowercase like "hello"
// TO UPPER CASE
// myVal = "hello"
// myVal2 = myVal.toUpperCase()
// console.log(myVal2)
// it will convert whole string to uppercase like "HELLO"
// REPLACE
// myVal = "hello".replace("ll","b")
// console.log(myVal);
// it will replace some part of string to something else
// here it will replace ll to b
// SPLIT
// myVal = "hello".split("e")
// console.log(myVal);
// it will split the string in diffrent part acc to the charac you have passed
// SUBSTRING
// myVal = "hello".substr(0,2)
// console.log(myVal);
// it will return substring first value you are passing to substr is
// a index from where you want to start
// and second value that you passing is length of string that you need
// TRIM
// myVal = " hello ".trim()
// console.log(myVal);
// it will remove all spaces before and after a string or b/w a string
// SLICE
// myVal = "hello world".slice(0,6)
// console.log(myVal)
// it will return part of string
// first value : a index from where you want to start
// and second value : a index from where you want to end
// CLASS TOPICS : SPREAD OPERATORS // we cannot sum two array like // array1 = [1,2,3,4,5] // array2 = [6,7,8] // array3 = array1 + array2 // console.log(typeof(array3)); // we will get type string instead of a new array // using spread opearators // array1 = [1,2,3,4,5] // array2 = [6,7,8] // array3 = [...array1,...array2] // console.log(array3) // we can sum up two arrays [...] then array name like array1 and then again ...array2 // to sum up and get a new array with elements of both arrays // using spread operator on object // obj1 = {name:"shagun",age:23} // obj2 = {gender:"male",name:"xyz"} // obj3 = {...obj1,...obj2} // console.log(obj3) // here the only diff is that those properties which are same will get //updated because we cannot have two key
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