js/array_join.js at master · prabhu-sundaram/js · GitHub

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const array1=[1,2,3,'My','Name','is','Ney']
console.log(array1)
//  [ 1, 2, 3, 'My', 'Name', 'is', 'Ney' ]

const string1=array1.join()
console.log(string1)
// 1,2,3,My,Name,is,Ney

const string2=array1.join('')
console.log(string2)
//123MyNameisNey

const string3=array1.join(',')
console.log(string3)
// 1,2,3,My,Name,is,Ney

const string4=array1.join('and')
console.log(string4)
// 1and2and3andMyandNameandisandNey
console.log("=========================");
const string5=array1.join('-')
console.log(string5)
// 1-2-3-My-Name-is-Ney

const string6=array1.join('=')
console.log(string6)
// 1=2=3=My=Name=is=Ney

const string7=array1.join(':')
console.log(string7)
// 1:2:3:My:Name:is:Ney

const string8=array1.join(' ')
console.log(string8)
// 1 2 3 My Name is Ney

console.log("=========================");