The JavaScript string concat() method retrieves a combination of two or more strings. Original strings will not be modified. Syntax: string.concat(string1,string2,…) Parameters: string1,string2,…: Represents the different strings to combined. Return: New string after the combination of strings. Example: <!DOCTYPE html> <html> <body> <script> document.writeln(“HELLO”.concat(” WORLD!”)); </script> </body> </html>
The JavaScript string charCodeAt() method retrieves the Unicode value of a character present at the specified index. Index can be from 0 to n-1 where n is the size of the string. It will return an integer value between 0 and 65535. Syntax: string.charCodeAt(index) Parameters: index: It represents the specified position of a character. Return: … Read more
The JavaScript string charAt() method retrieves the char value present at the specified index. If n is the size of the string then the index can be from 0 to n-1. Syntax: String.charAt(index) Parameters: index: It represents the specified position of a character. Return: Char value present at the specified index. Example 1: <!DOCTYPE html> … Read more
The JavaScript Set values() method gives an object of Set iterator that contains the values for each element. It is similar to the keys() method of Map. Syntax: setObj.values() Return: Iterator object. Example: <!DOCTYPE html> <html> <body> <script> var jewels = new Set(); jewels.add(“DIAMOND”).add(“GOLD”).add(“PLATINUM”).add(“SILVER”); var gems =jewels.values(); document.writeln(gems.next().value+”<br>”); document.writeln(gems.next().value+”<br>”); document.writeln(gems.next().value+”<br>”); document.writeln(gems.next().value); </script> </body> </html>
The JavaScript Set has() method indicates whether the Set object contains the specified value element. Syntax: setObj.has(value) Parameters: value: It represents the value of the element whose presence has to be checked in the Set object. Return: It returns true if the specified element is in the set otherwise returns false. Example: <!DOCTYPE html> <html> … Read more
The JavaScript Set forEach() method executes the specified function once for each value. Syntax: setObj.forEach(callback(currentValue, currentKey, Set)) { // code to be executed } Parameters: callback: It represents the function to be executed for each element, taking three arguments: (currentValue, currentKey, and set). thisArg: It represents this keyword for the function. Example: <!DOCTYPE html> <html> … Read more
The JavaScript Set entries() method gives an object of Set iterator that contains an array of [value, value] for each element. As there is no concept of key in a set that’s why value and key are the same. Note: The iterator object maintains the insertion order. Syntax: setObj.entries() Return: An iterator object that contains … Read more
The JavaScript Set delete() method deletes or removes only the selected elements from the Set object. Syntax: setObj.delete(value) Parameters: value: It represents the value of the specified property to be deleted. Return: It returns true if the specified element is deleted or removed successfully otherwise, it returns false. Example: <!DOCTYPE html> <html> <body> <script> var … Read more
The JavaScript Set clear() method clears or removes all the elements from the Set object. Syntax: setObj.clear() Example: <!DOCTYPE html> <html> <body> <script> var jewels = new Set(); jewels.add(“DIAMOND”).add(“GOLD”).add(“PLATINUM”).add(“SILVER”); for (let i of jewels) { document.write(i+”<br>”); } jewels.clear(); document.write(jewels.size); </script> </body> </html>
The JavaScript Set add() method is used to add the new element with the specified value to the Set object. A new object will be added to the end of the Set object. Syntax: setObj.add(value) Parameters: value: It represents the value of the element to be added to a set object. Return: Modified set object. … Read more