The toString() method does not accept any parameter as a separator to separate elements, it by default returns comma-separated list of all the elements of array. The toString() method simply converts all the elements of the array into a string and then return that string in the form of a comma-separated list which contains all the elements that contained by the original array. Var arr = new Array("Java","PHP","Ruby") The below example illustrates the use of the join() method to turn a JavaScript array in a comma−separated list − Step 3 − In the third step, we will use the join() method inside the function declared in the previous step and display the result on user screen when user clicks the button. Step 2 − In the next step, we will define a JavaScript function that triggers clicking the button. Step 1 − As a first step of the algorithm, we will define a JavaScript array which we will turn into a comma-separated list later. Let us understand the practical implementation of join() method to turn the elements of a array in a comma-separated list − Algorithm String − It will return a string containing all the array elements that are separated by the separator passed to the join() method. If there is no any separator passed to this method, then by default it will separate all the elements with a comma(“,”) separator. You can pass any separator of your choice to it like: dot, comma, and, or etc. Separator − The join() method accepts a separator in the form of string. Let us discuss the parameters and the return value of the join() method − Parameters Syntaxįollowing syntax shows how we can use the join() method to get a comma−separated list of all array elements − array.join(separator) The join() method joins all the elements of an array and forms a string and returns it later by separating every element with the specified separator passed to the method in form of a string. Let us discuss both of these methods in detail with help of code examples − Using the Array join() Method We will discuss these methods in detail.įollowing are the in-built methods provided by JavaScript to convert the array into a comma-separated list − Fortunately, JavaScript allows us to do so by using some in-built methods. Sometimes, we need the elements of a JavaScript array in a format that is not returned by the array itself by default, so we need to write some extra code to implement this task. In this tutorial, we will learn how we can change the elements of a JavaScript array in a comma-separated list.
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