We can use the JavaScript join() method to convert an array of values into a string.

var arrayOfColors = ["Red", "Green", "Blue", "Orange", "Yellow"];
var stringOfColors = arrayOfColors.join();

Let’s take a look at a simple example below.

Let’s say we have a simple array of colors and we want to convert the array to a string. To do this we simply need to use the JavaScript Array join() method.

var arrayOfColors = ["red","blue","green","yellow","orange","purple","pink","black"];
var stringOfColors = arrayOfColors.join();

In this example, the resulting string “stringOfColors” would now contain the following:


If you notice the string has no spaces between the colors. If we wanted to convert the array to a string and have there be spaces in between each color, we would just have to add the following code to the join() method:

var arrayOfColors = ["red","blue","green","yellow","orange","purple","pink","black"];
var stringOfColors = arrayOfColors.join(", ");

Which would result in the following:

red, blue, green, yellow, orange, purple, pink, black

Let’s take a look at an example using HTML.

Using the JavaScript join method to convert an Array into a String with a Click

In this example, we will have a large array of CSS color names that are supported by most browsers. We will take the long array of colors, and convert it into a string of color names, and then show it to the user.

Here is the HTML set up:

Show colors

In the JavaScript portion of this example, all we will do is grab the array of colors that we created, and use the join() method on it to convert it into a string. We will then show the string of colors to the user using the textContent property.

Here is the JavaScript code:

var cssColors = ["AliceBlue","AntiqueWhite","Aqua","Aquamarine","Azure","Beige","Bisque","Black","BlanchedAlmond","Blue","BlueViolet","Brown","BurlyWood","CadetBlue","Chartreuse","Chocolate","Coral","CornflowerBlue","Cornsilk","Crimson","Cyan","DarkBlue","DarkCyan","DarkGoldenRod","DarkGray","DarkGrey","DarkGreen","DarkKhaki","DarkMagenta","DarkOliveGreen","DarkOrange","DarkOrchid","DarkRed","DarkSalmon","DarkSeaGreen","DarkSlateBlue","DarkSlateGray","DarkSlateGrey","DarkTurquoise","DarkViolet","DeepPink","DeepSkyBlue","DimGray","DimGrey","DodgerBlue","FireBrick","FloralWhite","ForestGreen","Fuchsia","Gainsboro","GhostWhite","Gold","GoldenRod","Gray","Grey","Green","GreenYellow","HoneyDew","HotPink","IndianRed","Indigo","Ivory","Khaki","Lavender","LavenderBlush","LawnGreen","LemonChiffon","LightBlue","LightCoral","LightCyan","LightGoldenRodYellow","LightGray","LightGrey","LightGreen","LightPink","LightSalmon","LightSeaGreen","LightSkyBlue","LightSlateGray","LightSlateGrey","LightSteelBlue","LightYellow","Lime","LimeGreen","Linen","Magenta","Maroon","MediumAquaMarine","MediumBlue","MediumOrchid","MediumPurple","MediumSeaGreen","MediumSlateBlue","MediumSpringGreen","MediumTurquoise","MediumVioletRed","MidnightBlue","MintCream","MistyRose","Moccasin","NavajoWhite","Navy","OldLace","Olive","OliveDrab","Orange","OrangeRed","Orchid","PaleGoldenRod","PaleGreen","PaleTurquoise","PaleVioletRed","PapayaWhip","PeachPuff","Peru","Pink","Plum","PowderBlue","Purple","RebeccaPurple","Red","RosyBrown","RoyalBlue","SaddleBrown","Salmon","SandyBrown","SeaGreen","SeaShell","Sienna","Silver","SkyBlue","SlateBlue","SlateGray","SlateGrey","Snow","SpringGreen","SteelBlue","Tan","Teal","Thistle","Tomato","Turquoise","Violet","Wheat","White","WhiteSmoke","Yellow","YellowGreen"];

function showColors() {
  //Convert our array of colors above into a string of colors, with each color separated by a comma and space.
  var stringOfColors = cssColors.join(", ");
  //Show colors to the user
  document.getElementById("results").textContent = stringOfColors;

The final code and output for this example of using the JavaScript join method is below:

Code Output:

Show colors

Full Code:

Show colors

Hopefully this article has been useful for you to understand how to use the JavaScript join() method.

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Last Update: May 3, 2024