ArrayBuffer Object

arrayBuffer

Required. The variable name to which the ArrayBuffer object is assigned.

length

The length of the buffer. The contents of the ArrayBuffer are initialized to 0. If the requested number of bytes could not be allocated an exception is raised.

The following table lists the properties of the ArrayBuffer object.

The following example shows how to use an ArrayBuffer object to process the binary data acquired from an XmlHttpRequest. You can use a DataView Object to get the individual values.

var req = new XMLHttpRequest();
    req.open('GET', "http://www.example.com");
    req.responseType = "arraybuffer";
    req.send();

    req.onreadystatechange = function () {
        if (req.readyState === 4) {
            var buffer = req.response;
            var dataview = new DataView(buffer);
            var ints = new Int32Array(buffer.byteLength / 4);
            for (var i = 0; i < ints.length; i++) {
                ints[i] = dataview.getInt32(i * 4);
            }
        alert(ints[10]);
        }
    }

For more information about using XmlHttpRequest, see XMLHttpRequest enhancements.

Supported in the Internet Explorer 10 standards document mode. Also supported in Windows Store apps. See Version Information.

Not supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards.