JavaScript: Check whether the first character of a string is uppercase or not

JavaScript validation with regular expression: Exercise-1 with Solution

Check Uppercase First

Write a JavaScript program to test whether the first character of a string is uppercase or not.

Visual Presentation:

Sample Solution:

JavaScript Code:

function upper_case(str)
{
   regexp = /^[A-Z]/;
   if (regexp.test(str))
    {
      console.log("String's first character is uppercase");
    } 
    else
    {
      console.log("String's first character is not uppercase");
    }
}
upper_case('Abcd');
upper_case('abcd');

Output:

String's first character is uppercase
String's first character is not uppercase

Flowchart:

Live Demo:

See the Pen javascript-regexp-exercise-1 by w3resource (@w3resource) on CodePen.

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