filter() function is supported by all the browsers even including the Internet Explorer. If element is found, the returned array will contain the required elements, else an empty array will be returned by the function. filter() returns an array containing the elements satisfying the conditions mentioned in the arrow function. Unlike the array search functions we have seen so far, the. The arrow function will have the keyword as input and the current iteration as index. filter() function executes the arrow function on each element of the array and returns the elements that satisfy the conditions mention ins the arrow function. The arrow function will be holding the filter criteria. The Array.filter() function accepts an inline function or arrow function as a parameter. It works well while searching for an element in an array or even a string. indexOf() function is a commonly used function in javascript. indexOf() Function to Check if Array Contains Value in JavaScript Let us look at ways to search for an element in an array. The functionality will be efficient and less bug-prone with in-built functions. It makes our task much easier, as we need to code less. Even though the search functionality can be coded with basic JavaScript syntaxes using loops, it is good to know the inbuilt functionalities available for array search in JavaScript, their usage, return types and the behaviour. Often we find ourselves in a situation to check if array contains value in JavaScript. Using Simple for Loop to Search for an Element.filter() Function to Search Elemnt in an Array in JavaScript find() Function to Find Element in an Array in JavaScript includes() Function to Check if Array Contains Value in JavaScript
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