JavaScript: Convert Hexadecimal to ASCII format
JavaScript String : Exercise-28 with Solution
Write a JavaScript function to convert Hexadecimal to ASCII format.
Test Data:
console.log(hex_to_ascii('3132'));
console.log(hex_to_ascii('313030'));
Output:
"12"
"100"
Sample Solution:-
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Write a JavaScript function to convert Hexadecimal to ASCII</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function hex_to_ascii(str1)
{
var hex = str1.toString();
var str = '';
for (var n = 0; n < hex.length; n += 2) {
str += String.fromCharCode(parseInt(hex.substr(n, 2), 16));
}
return str;
}
console.log(hex_to_ascii('3132'));
console.log(hex_to_ascii('313030'));
Sample Output:
12 100
Flowchart:

Live Demo:
See the Pen JavaScript Convert Hexadecimal to ASCII format - string-ex-28 by w3resource (@w3resource) on CodePen.
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JavaScript: Tips of the Day
var functionName = function() {} vs function functionName() {}
The difference is that functionOne is a function expression and so only defined when that line is reached, whereas functionTwo is a function declaration and is defined as soon as its surrounding function or script is executed (due to hoisting).
For example, a function expression:
// TypeError: functionOne is not a function functionOne(); var functionOne = function() { console.log("Hello!"); };
Historically, function declarations defined within blocks were handled inconsistently between browsers. Strict mode (introduced in ES5) resolved this by scoping function declarations to their enclosing block.
'use strict'; { // note this block! function functionThree() { console.log("Hello!"); } } functionThree(); // ReferenceError
Ref: https://bit.ly/2zMAj1O
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