<h1>Commonly Asked JavaScript Methods in Interviews</h1>
<h2>1. Array Methods</h2>
<ul>
<li><strong><code>map()</code></strong>: Creates a new array populated with the results of calling a provided function on every element in the calling array.</li>
<li><strong><code>filter()</code></strong>: Creates a new array with all elements that pass the test implemented by the provided function.</li>
<li><strong><code>reduce()</code></strong>: Executes a reducer function on each element of the array, resulting in a single output value.</li>
<li><strong><code>forEach()</code></strong>: Executes a provided function once for each array element.</li>
<li><strong><code>find()</code></strong>: Returns the first element in the array that satisfies the provided testing function.</li>
<li><strong><code>slice()</code></strong>: Returns a shallow copy of a portion of an array into a new array object.</li>
<li><strong><code>splice()</code></strong>: Changes the contents of an array by removing or replacing existing elements and/or adding new elements.</li>
<li><strong><code>concat()</code></strong>: Merges two or more arrays into a new array.</li>
<li><strong><code>includes()</code></strong>: Determines whether an array includes a certain value among its entries.</li>
<li><strong><code>some()</code></strong>: Tests whether at least one element in the array passes the provided function.</li>
<li><strong><code>every()</code></strong>: Tests whether all elements in the array pass the provided function.</li>
</ul>
<h2>2. String Methods</h2>
<ul>
<li><strong><code>split()</code></strong>: Splits a string into an array of substrings.</li>
<li><strong><code>replace()</code></strong>: Returns a new string with some or all matches of a pattern replaced by a replacement.</li>
<li><strong><code>substring()</code></strong>: Returns the part of the string between the start and end indexes.</li>
<li><strong><code>trim()</code></strong>: Removes whitespace from both ends of a string.</li>
<li><strong><code>charAt()</code></strong>: Returns the character at a specified index.</li>
<li><strong><code>includes()</code></strong>: Determines whether one string may be found within another string.</li>
</ul>
<h2>3. Object Methods</h2>
<ul>
<li><strong><code>Object.keys()</code></strong>: Returns an array of a given object’s property names.</li>
<li><strong><code>Object.values()</code></strong>: Returns an array of a given object’s property values.</li>
<li><strong><code>Object.entries()</code></strong>: Returns an array of a given object’s own enumerable property <code>[key, value]</code> pairs.</li>
<li><strong><code>Object.assign()</code></strong>: Copies the values of all enumerable own properties from one or more source objects to a target object.</li>
</ul>
<h2>4. Number Methods</h2>
<ul>
<li><strong><code>parseInt()</code></strong>: Parses a string and returns an integer.</li>
<li><strong><code>parseFloat()</code></strong>: Parses a string and returns a floating-point number.</li>
<li><strong><code>toFixed()</code></strong>: Formats a number using fixed-point notation.</li>
<li><strong><code>toString()</code></strong>: Returns a string representing the specified number.</li>
</ul>
<h2>5. Miscellaneous Methods</h2>
<ul>
<li><strong><code>setTimeout()</code></strong>: Calls a function or evaluates an expression after a specified number of milliseconds.</li>
<li><strong><code>setInterval()</code></strong>: Repeatedly calls a function or executes a code snippet, with a fixed time delay between each call.</li>
<li><strong><code>JSON.stringify()</code></strong>: Converts a JavaScript object or value to a JSON string.</li>
<li><strong><code>JSON.parse()</code></strong>: Parses a JSON string, constructing the JavaScript value or object described by the string.</li>
<li><strong><code>Promise.all()</code></strong>: Waits for all promises to be resolved or for any to be rejected.</li>
<li><strong><code>fetch()</code></strong>: Starts the process of fetching a resource from the network.</li>
</ul>
<h2>6. Date Methods</h2>
<ul>
<li><strong><code>getDate()</code></strong>: Returns the day of the month for the specified date according to local time.</li>
<li><strong><code>getDay()</code></strong>: Returns the day of the week for the specified date according to local time.</li>
<li><strong><code>getFullYear()</code></strong>: Returns the year of the specified date according to local time.</li>
<li><strong><code>toISOString()</code></strong>: Returns a string in simplified extended ISO format (ISO 8601).</li>
</ul>
<h2>7. Function Methods</h2>
<ul>
<li><strong><code>call()</code></strong>: Calls a function with a given <code>this</code> value and arguments provided individually.</li>
<li><strong><code>apply()</code></strong>: Calls a function with a given <code>this</code> value, and arguments provided as an array.</li>
<li><strong><code>bind()</code></strong>: Creates a new function that, when called, has its <code>this</code> keyword set to the provided value, with a given sequence of arguments preceding any provided when the new function is called.</li>
</ul>


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The Dev Craft

An overview of commonly asked JavaScript methods in interviews, covering array, string, object, number, miscellaneous, date, and function methods. Detailed descriptions of each method include map(), filter(), reduce(), split(), replace(), Object.keys(), parseInt(), setTimeout(), JSON.stringify(), getDate(), call(), apply(), and bind().

Most common used methods in js

<p>If anybody is curious about the Function Methods : <code>call()</code>, <code>apply()</code>, <code>bind()</code> give <a href="https://medium.com/@omergoldberg/javascript-call-apply-and-bind-e5c27301f7bb" target="_blank" rel="noopener nofollow">this medium article</a> a shot</p>
