How to set the edit mode of Textbox using FabricJS?

In this tutorial, we are going to learn how to enable the edit mode of a Textbox using FabricJS. Just as we can specify the position, colour, opacity and dimension of a textbox object in the canvas, we can also edit the text in our Textbox. This can be enabled or disabled by using the editable property.

Syntax

new fabric.Textbox(text: String, { editable : Boolean }: Object)

Parameters

text − This parameter accepts a String which is the text string that we want to display inside our textbox.
options (optional) − This parameter is an Object which provides additional customizations to our textbox. Using this parameter, properties such as colour, cursor, stroke width and a lot of other properties can be changed related to the object of which editable is a property.

Options Keys

editable: This property accepts a Boolean value. If we assign it a "true" value, then we are allowed to edit the text inside a Textbox. Its default value is true.

Example 1

Default behaviour of a Textbox object in the canvas

Let’s see a code example to understand the default behaviour of a Textbox object when editable property is not used. We are allowed to edit the text inside a Textbox object by default.


<!DOCTYPE html>
<html>
<head>
	<!-- Adding the Fabric JS Library-->
	<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/510/fabric.min.js"></script>
</head>
<body>
	<h2>Default behaviour of a Textbox object in the canvas</h2>
	<p>You can double click on the Textbox and edit the text</p>
	<canvas id="canvas"></canvas>
	<script>
		// Initiate a canvas instance
		var canvas = new fabric.Canvas("canvas");
		canvas.setWidth(document.body.scrollWidth);
		canvas.setHeight(250);
		
		// Initiate a textbox object
		var textbox = new fabric.Textbox("It doesn't matter how slow you go, as long as you don't stop.", {
			width: 400,
			left: 110,
			top: 70,
			fill: "orange",
			stroke: "green",
			textAlign: "center",
		});
		
		// Add it to the canvas
		canvas.add(textbox);
	</script>
</body>
</html>

Example 2

Passing editable as key with "false" value

In this example, we will see how we can make the text inside the textbox object uneditable by using the editable property. As we can see, although we can select the textbox object, we can no longer edit the text inside it.


<!DOCTYPE html>
<html>
<head>
	<!-- Adding the Fabric JS Library-->
	<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/510/fabric.min.js"></script>
</head>
	<body>
	<h2>Passing editable as key with "false" value</h2>
	<p>You can double-click on the textbox to see that the text is not editable</p>
	<canvas id="canvas"></canvas>
	<script>
		// Initiate a canvas instance
		var canvas = new fabric.Canvas("canvas");
		canvas.setWidth(document.body.scrollWidth);
		canvas.setHeight(250);
		
		// Initiate a textbox object
		var textbox = new fabric.Textbox("It doesn't matter how slow you go, as long as you don't stop.", {
			width: 400,
			left: 110,
			top: 70,
			fill: "orange",
			stroke: "green",
			textAlign: "center",
			editable: false,
		});
		
		// Add it to the canvas
		canvas.add(textbox);
	</script>
</body>
</html>