![]() ![]() You can specify the length of the array as an argument to the constructor, or you can pass in initial values as separate arguments. The Array() constructor can be used to create new arrays. The Array.isArray() method can be used to check if a variable is an array: const array = The om() method can be used to create a new array from an iterable object, such as a string, a Set, or a Map: // Create a new array from a string Show a Custom Context Menu on Right Click Programmatically Disable/Enable a Text Input Get an array of dates between 2 given datesĬonvert a Map object to JSON and vice versa Sorting an Array of Objects by Date Property ![]() Truncate the time portion of a date string Get current date time in yyyy/MM/dd HH:mm:ss formatĢ Ways to Convert a String into a Date ObjectĬonvert Timestamp to Date Time and Vice Versa Get the Key of an Object Property by Its ValueĬreate/Access Object Properties with Variable KeysĬhecking if a Key/Value Exists in an ObjectĬreate an Object from Arrays of Keys and ValuesĬonvert an Object to a Query String and Vice Versa Pass a JavaScript Array within a Query String Pass an Array to a Function as multiple Arguments Remove elements that occur in one array from anotherįind elements in array A but not in array B Remove all occurrences of a value from an arrayĬheck if an array contains a given objectĬonvert an Array to an Object in JavaScript How to append/prepend/insert elements to an array Update/Replace a Specific Element in an Array Generate an array of random elements with a given length Using Arrow Functions in JavaScript ClassesĬount the occurrences of elements in an array Private, protected, and public class members Use JavaScript classes to model and validate data Generate a random number between Min and Max and exclude a specific numberĬonvert Null, NaN, Undefined, and False to zeroĬalculate Variance and Standard Deviationĭefine a Function with Default Parameters Remove multiple consecutive whitespace characters Remove non-alphanumeric characters from a stringĬheck if a string contains non-alphanumeric characters Remove leading and trailing whitespace from a stringĬheck if a String Starts or Ends With a Substringĭifferent Ways to Generate Random StringsĬonvert a byte array to a hex string and vice versa JavaScript Regular Expressions Cheat SheetĬount the occurrences of each word in a string ![]()
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