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. This example uses JavaScript find() and defines a custom 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. 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. The Javascript arr.find () method in Javascript is used to get the value of the first element in the array that satisfies the provided condition. 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)

Javascript array find