TimeRanges.start() - Web APIs 编辑

Returns the time offset at which a specified time range begins.

Syntax

startTime = TimeRanges.start(index)

Parameters

• index is the range number to return the starting time for.

Exceptions

INDEX_SIZE_ERR

A DOMException thrown if the specified index doesn't correspond to an existing range.

Example

Given a video element with the ID "myVideo":

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
  }
}

This example looks at the time ranges and looks to see if the entire video has been loaded.

Specifications

Browser compatibility

BCD tables only load in the browser