HTML5 APIs - Where No Man Has Gone Before - StarTechConf, Chile
10 likes7,684 views
The document discusses HTML5 APIs and new features available for video and canvas elements. It provides code examples for using the <video> element to embed video with controls and multiple sources, and for drawing shapes and images onto a <canvas> element using its 2D context.
![var filesUpload = document.getElementById("files-upload");
filesUpload.onchange = function () {
// Access to data about all files
var files = this.files,
file;
for (var i=0, l=files.length; i<l; i++) {
file = file[i];
file.name; // Get the name of the file
file.size; // Get the size of the file, in bytes
file.type; // Get the type of the file
};
};](https://image.slidesharecdn.com/html5apis-wherenomanhasgonebefore-startechconf-111103214637-phpapp01/85/HTML5-APIs-Where-No-Man-Has-Gone-Before-StarTechConf-Chile-64-320.jpg)
![for (var i=0, l=files.length, file, img; i<l; i++) {
file = files[i];
if (typeof FileReader !== "undefined") {
img = document.createElement("img");
reader = new FileReader();
reader.onload = (function (theImg) {
return function (evt) {
theImg.src = evt.target.result;
};
}(img));
reader.readAsDataURL(file);
}
}](https://image.slidesharecdn.com/html5apis-wherenomanhasgonebefore-startechconf-111103214637-phpapp01/85/HTML5-APIs-Where-No-Man-Has-Gone-Before-StarTechConf-Chile-65-320.jpg)
![squareVertexPositionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, squareVertexPositionBuffer);
vertices = [
1.0, 1.0, 0.0,
-1.0, 1.0, 0.0,
1.0, -1.0, 0.0,
-1.0, -1.0, 0.0
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW);
squareVertexPositionBuffer.itemSize = 3;
squareVertexPositionBuffer.numItems = 4;
}](https://image.slidesharecdn.com/html5apis-wherenomanhasgonebefore-startechconf-111103214637-phpapp01/85/HTML5-APIs-Where-No-Man-Has-Gone-Before-StarTechConf-Chile-73-320.jpg)
HTML5 APIs - Where No Man Has Gone Before - StarTechConf, Chile
- 1. HTML5 APIs - Where No Man Has Gone Before!
- 6. Mozilla is a global non- profit dedicated to putting you in control of your online experience and shaping the future of the Web for the public good
- 7. @robertnyman
- 8. Video
- 10. <video controls> <source src="nasa.mp4"></source> <source src="nasa.webm"></source> <p>Hello, older web browser</p> </video>
- 18. must die!!! rea lly Not
- 19. Canvas
- 20. <canvas id="my-canvas" width="500" height="500"> I am canvas </canvas>
- 21. var canvas = document.getElementById("my-canvas"), context = canvas.getContext("2d"); context.fillStyle = "#f00"; context.fillRect(0, 0, 100, 100);
- 22. context.save(); context.fillStyle = "rgba(0, 0, 200, 0.5)"; context.fillRect(50, 50, 100, 100); context.clearRect(40, 40, 20, 20); context.restore();
- 24. context.fillRect(350, 50, 100, 100); context.lineWidth = "10"; context.lineJoin = "round"; context.moveTo(50, 50); context.lineTo(200, 200); context.lineTo(100, 300); context.closePath(); context.stroke(); context.fill(); context.beginPath(); context.strokeStyle = "#00f"; context.arc(200, 400, 75, 0, Math.PI*2, false); context.stroke();
- 27. context.fillStyle = "#fff"; context.fillRect(0, 0, 200, 200); context.fillStyle = "#f00"; context.fillRect(0, 0, 100, 100); context.fillRect(100, 100, 100, 100);
- 29. context.strokeStyle = "transparent"; context.arc(100, 100, 75, 0, Math.PI*2, false); context.clip(); context.stroke(); context.fillStyle = "#fff"; context.fillRect(0, 0, 200, 200); context.fillStyle = "#f00"; context.fillRect(0, 0, 100, 100); context.fillRect(100, 100, 100, 100);
- 31. var canvas = document.getElementById("my-canvas"), context = canvas.getContext("2d"), img = document.createElement("img"); img.addEventListener("load", function () { context.drawImage(img, 0, 0, 600, 200); // Get canvas content as a base64 image var base64Img = canvas.toDataURL("image/png"); }, false); img.setAttribute("src", "view.jpg");
- 36. pdf.js
- 37. Web Storage
- 41. var anthonyWeiner = { "Interest" : "Photography", "Social" : "Twitter" }; localStorage.setItem("anthonyWeiner", JSON.stringify(anthonyWeiner)); console.log(typeof JSON.parse(localStorage.getItem("anthonyWeiner")));
- 42. Web SQL IndexedDB
- 44. if (window.addEventListener) { /* Works well in Firefox and Opera with the Work Offline option in the File menu. Pulling the ethernet cable doesn't seem to trigger it */ window.addEventListener("online", isOnline, false); window.addEventListener("offline", isOffline, false); } else { /* Works in IE with the Work Offline option in the File menu and pulling the ethernet cable */ document.body.ononline = isOnline; document.body.onoffline = isOffline; }
- 45. // Poll the navigator.onLine property setInterval(function () { console.log(navigator.onLine); }, 1000);
- 47. CACHE MANIFEST # VERSION 10 CACHE: offline.html base.css FALLBACK: online.css offline.css NETWORK: /live-updates
- 48. Geolocation
- 49. if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(function (position) { alert(position.coords.latitude + ", " + position.coords.longitude); }); }
- 52. History API
- 54. var url = "http://robertnyman.com", title = "My blog", state = { address : url }; window.history.pushState(state, title, url);
- 56. Web Sockets
- 57. LiveConnect Forever Frame HTTP Long-Polling and XHR Streaming What came before WebSockets? AJAX HTTP Polling Cross Frame Communication
- 58. var ws = new WebSocket("ws://robertnyman.com/wsmagic"); // Send data ws.send("Some data"); // Close the connection ws.close();
- 59. var ws = new WebSocket("ws://robertnyman.com/wsmagic"); // When connection is opened ws.onopen = function () { console.log("Connection opened!"); }; // When you receive a message ws.onmessage = function (evt) { console.log(evt.data); }; // When you close the connection ws.onclose = function () { console.log("Connection closed"); }; // When an error occurred ws.onerror = function () { console.log("An error occurred"); };
- 62. File API
- 63. <!-- The multiple attribute allows for uploading of multiple files --> <input id="files-upload" type="file" multiple>
- 64. var filesUpload = document.getElementById("files-upload"); filesUpload.onchange = function () { // Access to data about all files var files = this.files, file; for (var i=0, l=files.length; i<l; i++) { file = file[i]; file.name; // Get the name of the file file.size; // Get the size of the file, in bytes file.type; // Get the type of the file }; };
- 65. for (var i=0, l=files.length, file, img; i<l; i++) { file = files[i]; if (typeof FileReader !== "undefined") { img = document.createElement("img"); reader = new FileReader(); reader.onload = (function (theImg) { return function (evt) { theImg.src = evt.target.result; }; }(img)); reader.readAsDataURL(file); } }
- 66. // For Firefox, Google Chrome and Safari var xhr = new XMLHttpRequest(); xhr.open("post", "upload/upload.php", true); xhr.onreadystatechange = function() { if (this.readyState === 4) { // File uploaded } }; // Upload file: Firefox, Google Chrome and Safari xhr.setRequestHeader("Content-Type", "multipart/form-data"); xhr.setRequestHeader("X-File-Name", file.fileName); xhr.setRequestHeader("X-File-Size", file.fileSize); xhr.setRequestHeader("X-File-Type", file.type); xhr.send(file);
- 68. WebGL
- 73. squareVertexPositionBuffer = gl.createBuffer(); gl.bindBuffer(gl.ARRAY_BUFFER, squareVertexPositionBuffer); vertices = [ 1.0, 1.0, 0.0, -1.0, 1.0, 0.0, 1.0, -1.0, 0.0, -1.0, -1.0, 0.0 ]; gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(vertices), gl.STATIC_DRAW); squareVertexPositionBuffer.itemSize = 3; squareVertexPositionBuffer.numItems = 4; }
- 74. var teapotPositions = new Float32Array([ 17.83489990234375, 0, 30.573999404907227, 16.452699661254883, -7.000179767608643, 30.573999404907227, 16.223100662231445, -6.902520179748535, 31.51460075378418, 17.586000442504883, 0, 31.51460075378418, 16.48940086364746, -7.015810012817383, 31.828100204467773, 17.87470054626465, 0, 31.828100204467773, 17.031099319458008, -7.246280193328857, 31.51460075378418, 18.46190071105957, 0, 31.51460075378418, 17.62779998779297, -7.500199794769287, 30.573999404907227, 19.108800888061523, 0, 30.573999404907227, 12.662699699401855, -12.662699699401855, 30.573999404907227, 12.486100196838379, -12.486100196838379, 31.51460075378418, 12.690999984741211, -12.690999984741211, 31.828100204467773, 13.10789966583252, -13.10789966583252, 31.51460075378418, 13.56719970703125, -13.56719970703125, 30.573999404907227, 7.000179767608643, -16.452699661254883, 30.573999404907227, 6.902520179748535, -16.223100662231445, 31.51460075378418, 7.015810012817383, -16.48940086364746, 31.828100204467773, 7.246280193328857, -17.031099319458008, 31.51460075378418, 7.500199794769287, -17.62779998779297, 30.573999404907227, 0, -17.83489990234375, 30.573999404907227, 0, -17.586000442504883, 31.51460075378418, 0, -17.87470054626465, 31.828100204467773, 0, -18.46190071105957, 31.51460075378418, 0, -19.108800888061523, 30.573999404907227, 0, -17.83489990234375, 30.573999404907227, -7.483870029449463, -16.452699661254883, 30.573999404907227, -7.106579780578613, -16.223100662231445, 31.51460075378418, 0, -17.586000442504883, 31.51460075378418, -7.07627010345459, -16.48940086364746, 31.828100204467773, 0, -17.87470054626465, 31.828100204467773, -7.25383996963501, -17.031099319458008, 31.51460075378418, 0, -18.46190071105957, 31.51460075378418, -7.500199794769287, -17.62779998779297, 30.573999404907227, 0, -19.108800888061523, 30.573999404907227, -13.092700004577637, -12.662699699401855, 30.573999404907227, -12.667499542236328, -12.486100196838379, 31.51460075378418, -12.744799613952637, -12.690999984741211, 31.828100204467773, -13.11460018157959, -13.10789966583252, 31.51460075378418, -13.56719970703125, -13.56719970703125, 30.573999404907227, -16.61389923095703, -7.000179767608643, 30.573999404907227, -16.291099548339844, -6.902520179748535, 31.51460075378418, -16.50950050354004, -7.015810012817383, 31.828100204467773, -17.033599853515625, -7.246280193328857, 31.51460075378418, -17.62779998779297, -7.500199794769287, 30.573999404907227, -17.83489990234375, 0, 30.573999404907227, -17.586000442504883, 0, 31.51460075378418, -17.87470054626465, 0, 31.828100204467773, -18.46190071105957, 0, 31.51460075378418, -19.108800888061523, 0, 30.573999404907227, -17.83489990234375, 0, 30.573999404907227, -16.452699661254883, 7.000179767608643,
- 76. Questions
- 77. Is it ready? Will HTML5 be around?
- 78. Is it ready?
- 79. Is it ready?
- 81. Will HTML5 be around?
- 85. HTML5 - The beauty of the Open Web
- 86. We are drowning in information, while starving for wisdom - E.O. Wilson
- 88. Robert Nyman robertnyman.com/speaking/ robnyman@mozilla.com robertnyman.com/html5/ Twitter: @robertnyman robertnyman.com/css3/