Learn how to select text, focus and clear the text in input box in Javascript. input.value = “” → this will make the input value to empty string. input.focus() → this method will set focus on the input box. input.select() → this will select the text in the input box. If you find this helpful …
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Learn how to remove the duplicate values in the array Simple Way is using Set (which only contains unique value). var array = [1,2,3,4,1,2,3]; var unique = [… new Set(array)] ; //or var unique = Array.from (new Set(array) ); Another way is var elements = [1,2,3,4,1,2,3]; var uniqueArray = elements.filter(function(element, currentIndex) { return elements.indexOf(element) == …
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There are some things we don’t know about how the ! operator works in Javascript. Basics The ! is a logical operator that will convert a value to its opposite boolean. Since JavaScript will coerce values, it will “convert” a value to its truthy/falsey form and return the opposite boolean value. When we perform the ! operation on …
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Learn how to get the maximum of numbers. max function in the Math object can be used to find the maximum of multiple numbers and array. Math.max(1,2); //2 Math.max(1,2,3); //3 If any one of the argument passed cannot be converted to number then it returns NaN Math.max(‘1’, 0); //1 Math.max(‘one’, 1); // NaN Math.max(1, 2, …
A Map is a collection of key🔑 — value pairs, similar to an object. It stores the key🔑 — value pairs in the insertion order. We can create a Map by passing an iterable object whose elements are in the form of key🔑 — value (Eg. [ [1,”one”], [2,”two”] ] ), or you can create an empty Map, then insert entries. …
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Learn about date and time in Javascript by creating some cool 😎 stuffs Javascript has a built-in Date object to handle all the time and date related operations. For example, you can display the current date/time, create a calendar, build a Pomodoro timer, code out a 🛑 stop-watch, and much more. Creating a Date Object We can …
There is no built-in reverse method present in String object to reverse a string.But we can reverse a string by, Convert the string to array , using split method. Reverse the array. Join the reversed array. function reverse (string) { return string.split(”).reverse().join(); } That is you have finished reading small and sweet article. 🤩😎. Follow Javascript …
Algorithm: Create a function that executes every second using setInterval. Get the total number of minutes. Convert that into seconds and store in a global variable. Decrement the seconds by “1” for each second. Check if the seconds reaches 0. If true then alert the user and clear the timer. Coding time! Ready→ Set → …
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The styleSetter function will return a function that has a local reference to the element that we have passed to styleSetter function so this is stored in the scope of the function which is returned by the function styleSetter . Follow Javascript Jeep🚙 🥶.
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