start

Summary

Returns the time for the start of the range with the given index. Throws an IndexSizeError if the index is out of range.

Method of apis/audio-video/TimeRangesapis/audio-video/TimeRanges

Syntax

var object = TimeRanges.start(index);

Parameters

index

Data-type

any

The zero-based index of the item in the collection.

Return Value

Returns an object of type DOM NodeDOM Node

Type: HRESULT. This method can return one of these values.

Examples

Given a video element with the ID "myVideo", this example looks at the time ranges to determine if the entire video has been loaded.

var v = document.GetElementById("myVideo");

var buf = v.buffered;

var numRanges = buf.length;

if (buf.length == 1) {
  // only one range
  if (buf.start(0) == 0 && buf.end(0) == v.duration) {
    // The one range starts at the beginning and ends at
    // the end of the video, so the whole thing is loaded
    var videoLoaded = true;
  }
}

Related specifications

W3C HTML5 Specification

W3C Editor’s Draft

Attributions

• Mozilla Developer Network : Article

• Microsoft Developer Network: Windows Internet Explorer API reference Article