This custom function simulates the behavior of the Array.filter() function. This function checks the conditions and gets all the elements instead of the first one. When you want a single needle from the haystack, reach for find () When to Use Array. This example uses JavaScript find() and defines a custom function. The JavaScript Array.find method is a convenient way to find and return the first occurence of an element in an array, under a defined testing function. JavaScript find() with external callbackįind(function callback(element, index, array) ) => product_name = 'Computer') ĭocument.write('Product_Name: '+result.product_name+'') įind all elements satisfying condition in the callback We have used the arrow function and this parameter in JavaScript forEach() examples. The JavaScript array find () method is used to return the value of the first element in the given array that satisfies the specified condition. It supports the arrow function to map the array components to the callback function. It has the ‘ this’ parameter which supplies the object and changes the default context.

This function accepts the callback function to apply the search condition. Below code snippets show the valid syntaxes of this function. The JavaScript find() function can be used with different syntax. Let’s know the syntax of find() to search elements from a collection of JavaScript array elements. It prints the following output in the document window. Document.write('Input Array: ' + mark +'') ĭocument.write('Mark greater than 50 is: ' + findResult)

Js find