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Testing individual components and functions to ensure they work as expected.
Testing multiple components working together as a group.
Testing the complete application flow from start to finish.
Automated software testing using modern tools and frameworks.
Comprehensive manual testing procedures and methodologies.
Testing REST APIs and web services for reliability.
Ensuring application security and vulnerability assessment.
// Bad Code Example
function calculate(x) {
let result = x + 10;
result = result * 2;
result = result / 3;
return result;
}
function calculateAgain(y) {
let result = y + 10;
result = result * 2;
result = result / 3;
return result;
}
// Good Code Example
function calculate(value) {
return ((value + 10) * 2) / 3;
}
// Reuse the same function
const result1 = calculate(x);
const result2 = calculate(y);
// Repetitive Code
const validateEmail = (email) => {
if (email === '') return 'Email is required';
if (!email.includes('@')) return 'Invalid email format';
if (email.length < 5) return 'Email too short';
return '';
}
const validatePassword = (password) => {
if (password === '') return 'Password is required';
if (password.length < 6) return 'Password too short';
if (!password.match(/[A-Z]/)) return 'Need uppercase';
return '';
}
const validateUsername = (username) => {
if (username === '') return 'Username is required';
if (username.length < 3) return 'Username too short';
if (!username.match(/^[a-zA-Z]/)) return 'Start with letter';
return '';
}
// Reusable Validation Rules
const validationRules = {
required: (value, field) =>
!value ? `${field} is required` : '',
minLength: (value, min) =>
value.length < min ? `Minimum ${min} characters` : '',
pattern: (value, regex, message) =>
!value.match(regex) ? message : ''
};
// Generic Validator
const validate = (value, field, rules) => {
for (const rule of rules) {
const error = rule(value, field);
if (error) return error;
}
return '';
};
// Usage
const validateField = (value, field, rules) =>
validate(value, field, rules);
// Example:
const emailRules = [
(v) => validationRules.required(v, 'Email'),
(v) => validationRules.pattern(v, /@/, 'Invalid email')
];Single source of truth for validation rules
Write once, use everywhere
Centralized validation reduces errors
.bg-image {
background-image: image-set(
"small.webp" 1x,
"medium.webp" 2x,
"large.webp" 3x
);
background-size: cover;
}Use correct dimensions for different devices
Use WebP with fallback for older browsers
Load images only when needed
A lightweight but powerful source code editor with rich ecosystem of extensions
The complete developer platform to build, scale and deliver secure software
Web developer tools built directly into the Google Chrome browser
Google's comprehensive app development platform with powerful tools
| Feature | VS Code | WebStorm | Sublime |
|---|---|---|---|
| Price | Free | Paid | Free Trial |
| Performance | |||
| Extensions | 14,000+ | 3,000+ | 5,000+ |
0-2 Years
$60K - $90K2-5 Years
$90K - $140K5+ Years
$140K - $200K+L3-L5 Level
SDE I-III
SDE I-III
E3-E5 Level
Coding & Technical Test
DSA & Problem Solving
Architecture Discussion
Culture & Compensation
Software testing is crucial for delivering high-quality applications that meet user expectations and business requirements. It helps identify bugs early in the development cycle and ensures reliable performance.
Testing individual components to ensure they work as expected.
Verifying that different parts of the application work together.
Testing the complete application flow from start to finish.
luxor, Egypt
youssefmohamed.weqena2@gimal.com
+20102 611 7080