A lightweight, interpreted, object-oriented language with first-class functions, most known as the scripting language for web pages.
JavaScript basics • DOM manipulation • ES6+ features • Async programming • Frameworks (React/Vue/Angular)
| Problem | Difficulty | Views | Action |
|---|---|---|---|
|
Featured
How can I create a promise in JavaScript?
JavaScript developers need to handle asynchronous operations like API calls, file operations, and ti... |
Advanced |
320
views
|
View |
|
Featured
How can I solve 'Uncaught TypeError: object is not a function'?
This error occurs when trying to call something that is not a function, often due to incorrect varia... |
Intermediate |
347
views
|
View |
|
Featured
What does "SyntaxError: Unexpected token x" imply in JavaScript?
Unexpected token errors... |
Beginner |
436
views
|
View |
|
Featured
Why am I seeing 'Uncaught RangeError: Invalid array length' in JavaScript?
RangeError occurs when trying to create arrays with invalid lengths, typically negative numbers or e... |
Intermediate |
329
views
|
View |
|
Featured
How to create a function in JavaScript?
JavaScript offers multiple ways to create functions (declarations, expressions, arrow functions) wit... |
Advanced |
310
views
|
View |
|
Featured
How to work with arrays in JavaScript?
JavaScript arrays have many methods and developers often struggle with choosing the right method for... |
Advanced |
345
views
|
View |
|
Featured
Why do I see 'Uncaught SyntaxError: missing ) after argument list'?
This syntax error occurs when function calls have mismatched parentheses, missing closing parenthese... |
Intermediate |
328
views
|
View |
|
Featured
Why do I get 'Uncaught URIError: URI malformed'?
URI malformed errors occur when trying to decode invalid URI strings or when URI components contain ... |
Intermediate |
361
views
|
View |
|
Featured
Why do I get 'RangeError: Maximum call stack size exceeded' in JavaScript?
RangeError occurs when the call stack exceeds its limit, typically caused by infinite recursion or v... |
Advanced |
335
views
|
View |
|
Featured
How can I use async/await in JavaScript?
JavaScript developers need a cleaner syntax for handling asynchronous operations compared to promise... |
Advanced |
316
views
|
View |
|
Featured
How to solve 'SyntaxError: Unexpected string' in JavaScript?
SyntaxError occurs when JavaScript parser encounters strings in unexpected locations, often due to m... |
Intermediate |
322
views
|
View |
|
Featured
How can I parse a JSON string in JavaScript?
JavaScript developers need to convert JSON strings from APIs, local storage, or other sources into J... |
Advanced |
339
views
|
View |
|
Featured
How can I solve "TypeError: Cannot read property 'x' of undefined" in JavaScript?
Handling undefined property access... |
Beginner |
417
views
|
View |
|
Featured
How to handle events in JavaScript?
Event handling involves complex concepts like bubbling, capturing, and delegation that developers of... |
Intermediate |
356
views
|
View |
|
Featured
How to declare and initialize a variable in JavaScript?
JavaScript has multiple ways to declare variables (var, let, const) with different scoping rules and... |
Intermediate |
367
views
|
View |
|
Why am I getting 'Uncaught TypeError: Cannot read property 'value' of null' in JavaScript?
This error occurs when trying to access properties of null or undefined values, commonly with DOM el... |
Advanced |
245
views
|
View |
|
How can I check if a JavaScript array includes a specific value?
Checking array inclusion... |
Beginner |
180
views
|
View |
|
How can I convert a string to a number in JavaScript?
String to number conversion... |
Beginner |
247
views
|
View |
|
Why is 'undefined' being logged when I try to access an object property?
Undefined property access... |
Beginner |
276
views
|
View |
|
Async/Await in JavaScript?
Async/await syntax simplifies Promise handling but developers often misuse it, leading to performanc... |
Advanced |
190
views
|
View |