In each iteration, we are accessing the individual array values and adding them to the result variable, when all values inside the array get added to the result variable, we returned the final result. Here, we are using the this keyword to reference the array on which the add method will get called and looping over the array. In the add method definition, we declare a result variable to store the array value count. Then, assigned an anonymous function to add, which is the definition of add method. To do that, we accessed the Array prototype property using dot notation and added the user-defined function add into Array Object like this. Repeat the process for all numbers in the array.Īfter the loop, the closest number to the target value is the number stored in the variable.Above, we are adding a user-defined method into the Array Object. If the current difference is smaller than the stored difference, update the stored difference to the current difference and store the current number as the closest number. Loop through the array of numbers, and for each number, calculate the absolute difference between the target value and the current number. Set the difference to a very high number, so that any number in the array will be smaller and become the new closest number. This program finds the closest number to a target value in an array of numbers −ĭefine a variable to store the difference between the target value and the current value in the loop. The result of this program will be the closest number to the target in the given array. If the difference is smaller than the current closest difference, we will update the closest number. The program will use a loop to go through each element in the array and use a conditional statement to compare the difference between the target number and the current element. We will write a JavaScript program to find the closest number in an array by comparing each element with the target number and keeping track of the closest one.
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