Web Designing(Html,Css,javascript)

Question

1. Write a JavaScript that reads several lines from text file and prints a table using DOM object indicating the number of occurrences of each letter of the alphabet in the text. For example, the phrase To be, or not to be: that is the question: contains “a” : 1 , “b”: 2 , “c”: no occurrence etc.

Answer 1

Hello Preet,

To get you started, I recommend the option of loading the text file into a variable using AJAX (Asynchronous Javascript And Ajax).

var request = new XMLHttpRequest();

request.open("GET", "TextFile.txt", false);

request.send();

var textfileContent = request.responseText;

You can also do this asynchronously:

var request = new XMLHttpRequest();

request.open("GET", "TextFile.txt");

request.onreadystatechange = function(){

if (request.readyState === 4){

var textfileContent = request.responseText;

// continue your program flow here

}

}

request.send();