What is the array.toString() method in TypeScript?
Overview
The toString() method of an array in TypeScript is used to return the string representation of all the elements of the array.
Syntax
array.toString()
Syntax of the toString() method in TypeScript
Parameter
array: This is the array we want to get the string representation of.
Return value
This method returns a string containing the combined elements of the array.
Example
// create arrays in TypeScriptlet names: string[] = ["Theodore", "James", "Peter", "Amaka"]let numbers : Array<number>;numbers = [12, 34, 5, 0.9]let cars : Array<string> = ["Porsche", "Toyota", "Lexus"]let randomValues : Array<string | number> = ["one",1, "two", 2, 56]// get the arrays as stringslet str1 = names.toString()let str2 = numbers.toString()let str3 = cars.toString()let str4 = randomValues.toString()// print the arrays as stringsconsole.log("String representation:",str1, "| Data type:",typeof(str1))console.log("String representation:",str2, "| Data type:",typeof(str2))console.log("String representation:",str3, "| Data type:",typeof(str3))console.log("String representation:",str4, "| Data type:",typeof(str4))
Explanation
- Lines 2–6: We declare four arrays and initialize them with elements.
- Lines 9–12: We get the string representations of the arrays using the
toString()method. - Lines 15–18: We print the string representation of the arrays and the data type of the returned string on the console.