JAVASCRIPT

javascript string is mutable

var immutableString = "Hello";

// In the above code, a new object with string value is created.

immutableString = immutableString + "World";

// We are now appending "World" to the existing value.

javascript string mutable

let a = b = "hello";
a = a + " world";
// b is not affected

javascript string is mutable

var immutableString = "Hello";

// In the above code, a new object with string value is created.

immutableString = immutableString + "World";

// We are now appending "World" to the existing value.

javascript string mutable

let a = b = "hello";
a = a + " world";
// b is not affected