Tag: Ovel

Develop and demonstrate a xhtml file which uses javascript program to find the first occurrence or the left most vowel in the user entered string.
Input: A String.
Output: Position of the left most or first occurrence of the vowel in the user entered string.

Video Explaining The JavaScript Code:

Work Flow:
Step 1: Prompt the user to enter a string, store the user entered string in a variable called str.

Step 2: Convert the string in str to upper case using toUpperCase function. Now the original value of str is lost and its equivalent upper case string has been stored.
Ex: str = str.toUpperCase();

Step 3: Now find the length of the entered string using length function. i.e., variableName.length; Ex: str.length;

Step 4: Using for loop, loop through the string from 0 to the string length(which is calculated in Step 3).

Step 5: Using chatAt function fetch one character at a time from str and store it in variable chr. Ex: chr = str.charAt(i);

Step 6: Now compare the value in chr with upper case vowels: A, E, I, O, U.

Step 7: If chr matches any vowel then break out of for loop.

Step 8: If the value of i after coming out of the for loop, is less than string length then print the value of i which is the position of the left most occurrence of the vowel. If the value of i is greater than or equal to string length, then Vowel not found in the entered string.
Javascrip coding explained in above video:

Input/Output:
If Microsoft is the input string, then the position of the first occurrence of vowel is 2. i.e., i.
For Oracle, O is a vowel, so the position is 1.
For Technotip, e is the first vowel, so the position is 2.
For any input which do not have a vowel in it, the above javascript program outputs this statement: No vowel found in the entered string.