JavaScript topic little Note

in the options, select an option that does not have a "55" output :

A, x=5+ "5"; Console.log (x); B, x= "5" +5; Console.log (x); C, x= "5" + "5"; Console.log (x);? D, x=5+5+ ""; Console.log (x);

D

what is the value of the following code output ?

var arr = [];

Arr["P"] = "abc";
Console.log (arr.length);

arr[2.1] = "ABC";
Console.log (arr.length);

0 0

Analysis: Because an array is essentially one of the objects, we can add attributes to the arrays without affecting the value of the length property.

JavaScript topic little Note