// 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
// 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 // m...
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