Javascript Fundamentals: Ai Chatbot says..
You: How do I combine arrays?
JavaScript chatbot: You can use the concat() method.
You: How do you make an alert appear after 10 seconds?
JavaScript chatbot: You can use the setTimeout() method.
what is a function?
JavaScript chatbot: A function is a block of code that performs an action or returns a value.
what is a variable?
JavaScript chatbot: A variable is used to store information.
what is an array?
JavaScript chatbot: An array is used to store multiple values in a single variable.
what is an object?
JavaScript chatbot: An object is a collection of properties, and a property is an association between a name (or key) and a value.
what is the DOM?
JavaScript chatbot: The DOM is a W3C (World Wide Web Consortium) standard.
what is the BOM?
JavaScript chatbot: The BOM is a browser object model.
what is an event?
JavaScript chatbot: An event describes the user's interaction with a webpage.
what is a string?
JavaScript chatbot: A string is used to store a series of characters like "John Doe".
what is a number?
JavaScript chatbot: A number is used to store numeric values.
what is a boolean?
JavaScript chatbot: A boolean is used to store a true or false value.
what is null?
JavaScript chatbot: Null is an empty value.
what is undefined?
JavaScript chatbot: Undefined means a variable has been declared but has not yet been assigned a value.
what is NaN?
JavaScript chatbot: NaN means Not-a-Number.
what is an operator?
JavaScript chatbot: An operator is a character that represents an action, for example +, -, * etc.
what is a prompt?
JavaScript chatbot: A prompt is used to get input from the user.
what is a comment?
JavaScript chatbot: A comment is used to explain your code, and to make it more readable.
what is an if statement?
JavaScript chatbot: An if statement is used to perform different actions based on different conditions.
what is a switch statement?
JavaScript chatbot: A switch statement is used to perform different actions based on different conditions.
what is a for loop?
JavaScript chatbot: A for loop is used to repeat a block of code a known number of times.
what is a while loop?
JavaScript chatbot: A while loop is used to repeat a block of code an unknown number of times, until a condition is met.
what is an event listener?
JavaScript chatbot: An event listener is a procedure in JavaScript that waits for an event to occur.
what is a try/catch statement?
JavaScript chatbot: A try/catch statement is used to handle errors in JavaScript.
what is a throw statement?
JavaScript chatbot: A throw statement is used to create a custom error.
what is a break statement?
JavaScript chatbot: A break statement is used to exit a loop.
what is a continue statement?
JavaScript chatbot: A continue statement is used to skip the current iteration of a loop.
what is a debugger statement?
JavaScript chatbot: A debugger statement invokes any available debugging functionality, such as setting a breakpoint.
what is a do/while loop?
JavaScript chatbot: A do/while loop is used to repeat a block of code an unknown number of times, until a condition is met.
what is a for/in loop?
JavaScript chatbot: A for/in loop is used to loop through the properties of an object.
what is a for/of loop?
JavaScript chatbot: A for/of loop is used to loop through the values of an iterable object.
what is a function expression?
JavaScript chatbot: A function expression is used to define a function inside an expression or statement.
what is a label?
JavaScript chatbot: A label is used to identify a loop, and to provide a statement with a name.
what is a let statement?
JavaScript chatbot: A let statement declares a block scope local variable.
what is a return statement?
JavaScript chatbot: A return statement is used to specify the value that is returned from a function.
what is a try statement?
JavaScript chatbot: A try statement is used to handle errors in JavaScript.
what is a typeof operator?
JavaScript chatbot: A typeof operator is used to get the data type (returns a string) of its operand.
what is a var statement?
JavaScript chatbot: A var statement declares a variable, optionally initializing it to a value.
what is an arrow function?
JavaScript chatbot: An arrow function expression has a shorter syntax than a function expression and does not have its own this, arguments, super, or new.target. These function expressions are best suited for non-method functions, and they cannot be used as constructors.
what is an async function?
JavaScript chatbot: An async function is a function declared with the async keyword. Async functions are instances of the AsyncFunction constructor, and the await keyword is permitted within them. The async and await keywords enable asynchronous, promise-based behavior to be written in a cleaner style, avoiding the need to explicitly configure promise chains.
what is an await operator?
JavaScript chatbot: The await operator is used to wait for a Promise. It can only be used inside an async function.
what is an export statement?
JavaScript chatbot: An export statement is used when creating JavaScript modules to export functions, objects, or primitive values from the module so they can be used by other programs with the import statement.
what is an import statement?
JavaScript chatbot: An import statement is used when importing functions, objects or primitive values from an external module and also supports importing types such as interfaces and type literals.
what is a module?
JavaScript chatbot: A module is a file containing JavaScript code.
what is a promise?
JavaScript chatbot: A promise is an object representing the eventual completion or failure of an asynchronous operation.
what is a template literal?
JavaScript chatbot: A template literal is a special type of string that makes creating complex strings easier. Template literals can contain placeholders. These are indicated by the dollar sign and curly braces (${expression}). The expressions in the placeholders and the text between them get passed to a function. The default function just concatenates the parts into a single string. If there is an expression preceding the template literal (tag here), this is called "tagging" the template literal, and the tag expression (usually a function) gets called with the processed template literal, which you can then manipulate before outputting. This can be used for advanced internationalization or other types of pre-processing of the template literal.
what is an arrow function?
JavaScript chatbot: An arrow function expression has a shorter syntax than a function expression and does not have its own this, arguments, super, or new.target. These function expressions are best suited for non-method functions, and they cannot be used as constructors.
what is an async function?
JavaScript chatbot: An async function is a function declared with the async keyword. Async functions are instances of the AsyncFunction constructor, and the await keyword is permitted within them. The async and await keywords enable asynchronous, promise-based behavior to be written in a cleaner style, avoiding the need to explicitly configure promise chains.
what is an await operator?
JavaScript chatbot: The await operator is used to wait for a Promise. It can only be used inside an async function.
what is an export statement?
JavaScript chatbot: An export statement is used when creating JavaScript modules to export functions, objects, or primitive values from the module so they can be used by other programs with the import statement.
what is an import statement?
JavaScript chatbot: An import statement is used when importing functions, objects or primitive values from an external module and also supports importing types such as interfaces and type literals.
what is a module?
JavaScript chatbot: A module is a file containing JavaScript code.
what is a promise?
JavaScript chatbot: A promise represents an operation that hasn't completed yet but will at some point in time in future either successfully complete or fail with error(s). Promises are useful both in nodejs based applications as well as frontend based applications built using frameworks like AngularJS etc where you need to deal with asynchronous operations like making http calls etc which may take some time to complete but you don't want your application flow to wait till it completes rather you want it to continue executing other statements while this operation completes in background so that once it completes you can handle its result/error accordingly without blocking your application flow/thread execution till then which would otherwise make your application unresponsive during that time period if it was synchronous operation instead of asynchronous one using promises/callbacks etc..