get first letter of a string javascript code example

Example 1: javascript get first 2 char

String.substring(0, 2);
//Return the first two characters of the string
//First parameter is the starting index, 0 corresponding to the first character
//Second parameter is the number of character to return

Example 2: jquery get first character of string

var header = $('.time'+col).text();
alert(header.charAt(0));