Javascript + HTML5 video screenshot method _ javascript skills

This article mainly introduces how to implement video in js + HTML5, and involves related techniques for javascript to operate html5 elements to implement multimedia files, for more information about how to implement video in js + HTML5. Share it with you for your reference. The details are as follows:

1. HTML section:

   
  
 Capture

2. the following code is triggered when you click the button:

(function() {  "use strict";  var video, $output;  var scale = 0.25;  var initialize = function() {    $output = $("#output");    video = $("#video").get(0);    $("#capture").click(captureImage);          };  var captureImage = function() {    var canvas = document.createElement("canvas");    canvas.width = video.videoWidth * scale;    canvas.height = video.videoHeight * scale;    canvas.getContext('2d')       .drawImage(video, 0, 0, canvas.width, canvas.height);    var img = document.createElement("img");    img.src = canvas.toDataURL();    $output.prepend(img);  };  $(initialize);      }());

I hope this article will help you design javascript programs.