HTML canvas createImageData() Method

The createImageData() method is used to create a new blank ImageData object. The pixels of the new object is transparent black by default. There are two syntaxes of the createImageData() method:

It is used to create a new ImageData object with the specified dimensions(in pixels): Syntax:
```
var imgData = context.createImageData(width, height);
```
It is used to create a new ImageData object with the same dimensions as the object specified by anotherImageData. It doesn't copy the image data. Syntax:
```
var imgData=context.createImageData(imageData);
```

Parameter Values:

width: It denotes the width(in pixels) of the new ImageData object.
height: It denotes the height(in pixels) of the new ImageData object.
imageData: It is the anotherImageData object

Example:

html

<!DOCTYPE html>
<html>

<body>
    <h3 style="color:green">GeeksforGeeks</h3>
    <h3>HTML canvas createImageData() Method</h3>
    <canvas id="myCanvas"
            width="200"
            height="200"
            style="border:2px solid ;">
  </canvas>
    <p id=g eeks></p>
    <script>
        var can = document.getElementById("myCanvas");
        var gfg = can.getContext("2d");
        var imgData = gfg.createImageData(150, 100);

        var i;
        for (i = 0; i < imgData.data.length; i += 3) {
            imgData.data[i + 0] = 100;
            imgData.data[i + 1] = 0;
            imgData.data[i + 2] = 0;
        }

        gfg.putImageData(imgData, 10, 10);
    </script>

</body>

</html>

Output:

Supported Browsers:

Chrome
Mozilla Firefox
Internet Explorer 9.0
Opera
Safari

HTML canvas createImageData() Method

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