LESSON 173 OF 414 · PROJECTS: EVERYDAY PROGRAMS

Password Strength V6 - Scored 0-100 in TypeScript

Practice

Combine the earlier checks into a single numeric score between 0 and 100.

You start with:

const password: string = "Secret!99";

Build:

Length: 9
Score: 100

Rules:

Start with score = 0.
If the length is at least 8, add 25.
If the password contains an uppercase letter, add 20.
If it contains a lowercase letter, add 20.
If it contains a digit, add 20.
If it contains a symbol (not a letter and not a digit), add 15.
Print "Length: " followed by the length, then print "Score: " followed by the score.

Try other passwords: with abc123 the output is

Length: 6
Score: 40

Run the four character-class detections, then five independent ifs that add to score.

const password: string = "Secret!99";

const length: number = password.length;
let hasUpper: boolean = false;
let hasLower: boolean = false;
let hasDigit: boolean = false;
let hasSymbol: boolean = false;
for (const c of password) {
    if (/[A-Z]/.test(c)) {
        hasUpper = true;
    }
    if (/[a-z]/.test(c)) {
        hasLower = true;
    }
    if (/[0-9]/.test(c)) {
        hasDigit = true;
    }
    if (!/[A-Za-z0-9]/.test(c)) {
        hasSymbol = true;
    }
}
let score: number = 0;
if (length >= 8) {
    score += 25;
}
if (hasUpper) {
    score += 20;
}
if (hasLower) {
    score += 20;
}
if (hasDigit) {
    score += 20;
}
if (hasSymbol) {
    score += 15;
}
console.log("Length: " + length);
console.log("Score: " + score);

STEP 1 OF 18

Guided

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Password Strength V6 - Scored 0-100 in TypeScript

Password Strength V6 in TypeScript