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JavaScript: Hide email addresses to protect from unauthorized user

JavaScript String: Exercise-6 with Solution

Write a JavaScript function to hide email addresses to protect from unauthorized user.

Test Data:
console.log(protect_email("[email protected]"));
"[email protected]"

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Hide email addresses to protect from unauthorised user</title>
</head>
<body>
</body>
</html>

JavaScript Code:

protect_email = function (user_email) {
    var avg, splitted, part1, part2;
    splitted = user_email.split("@");
    part1 = splitted[0];
    avg = part1.length / 2;
    part1 = part1.substring(0, (part1.length - avg));
    part2 = splitted[1];
    return part1 + "[email protected]" + part2;
};

console.log(protect_email("[email protected]"));

Sample Output:

[email protected]

Flowchart:

Flowchart: JavaScript- Hide email addresses to protect from unauthorized user

Live Demo:

See the Pen JavaScript Hide email addresses to protect from unauthorized user - string-ex-6 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

JavaScript: Implicit type coercion

function sum(a, b) {
  return a + b;
}

sum(1, '2');

JavaScript is a dynamically typed language: we don't specify what types certain variables are. Values can automatically be converted into another type without you knowing, which is called implicit type coercion. Coercion is converting from one type into another.

In this example, JavaScript converts the number 1 into a string, in order for the function to make sense and return a value. During the addition of a numeric type (1) and a string type ('2'), the number is treated as a string. We can concatenate strings like "Hello" + "World", so what's happening here is "1" + "2" which returns "12".

Ref: https://bit.ly/323Y0P6