Let us see another example, wherein the result would be undefined − Exampleĭocument.getElementById("demo").innerHTML = pointsArr. Var pointsArr = ĭocument.getElementById("demo").innerHTML = pointsArr.find(pointsFunc) Get the points (first element) above 400. The this value parameter is the value to be passed to the function. The index is the array index, and arr is the array. Here, function is a function with val, which is the value of the current element. The syntax is as follows − array.find(function(val, index, arr),thisValue) if (! find() method of JavaScript is used to return the first elements value in an array, if the condition is passed, otherwise the return value is undefined. The JS array find() method has been added to the ECMAScript 2015 specification and may not be available in all JavaScript implementations. If the actress is Millie Bobby Brown in the above code, it will give us that object with two properties otherwise, it will provide us with undefined. So let us create the file called the app.js and add the following code. We will use Node.js in this example to run the javascript code. This article describes the steps for enabling JavaScript in web browsers. It used to tell the function to use the array value when executing an argument function. If JavaScript has been disabled within your browser, the content or the functionality of the web page can be limited or unavailable. Get confident with advanced methods - Reduce, Find, Filter, Every, Some and Map. filter() function was called.Īnother argument is thisValue. Index This is the index of the current item being processed by the function.Īrray: This is the Array on which the Array. The function takes the following three arguments:Įlement: This is the current item being processed by the function. array.find(function(element, index, array),thisValue) Parameters The syntax of the array find() method is the following. The first odd number for which the argument function returns true is reported by the find() function as the answer. If the string to look for is not found, -1 is returned. This returns an integer value where 0 is the first character in the string. Javascript find() function calls an argument function for every item of the Array. The indexOf function is a method of the String object, so to find the position of a string within the 'foo' variable above we would use foo.indexOf ().
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