The JavaScript array every() method is used to determine whether all the elements of an array are satisfying the provided function conditions.
Syntax:
array.every (callback (currentValue, index, arr), thisArg)
Parameters:
callback: It represents the method to test the condition. It is required.
currentValue: It represents the array’s current element. It is required.
index: Current element index. It is optional.
arr: It represents the array on which every() method is to be invoked. It is optional.
thisArg: It is used as this keyword while executing callback. It is optional.
Returns:
Return true if all the elements of an array satisfy the specified conditions else return true.
Example:
<!DOCTYPE html> <html> <head> </head> <body> <script> var a = ["GOLD","SILVER","DIAMOND","RUBY","PLATINUM"] function check(value) { return value == "RUBY"; } document.writeln(a.every(check)); </script> </body> </html>