BAT大佬推荐使用的HTML5的十个功能

HTML5引入了许多新特性，包括更好的表单输入类型、地理位置API、Canvas绘图、离线应用程序缓存等。以下是一些HTML5的功能和示例代码：

地理位置API (Geolocation API)




if ("geolocation" in navigator) {
  navigator.geolocation.getCurrentPosition(function(position) {
    console.log("Latitude is :", position.coords.latitude);
    console.log("Longitude is :", position.coords.longitude);
  });
} else {
  console.log("Geolocation is not supported by this browser.");
}

画布绘图 (Canvas)




<canvas id="myCanvas" width="200" height="100"></canvas>
<script>
var canvas = document.getElementById('myCanvas');
var ctx = canvas.getContext('2d');
ctx.fillStyle = '#FF0000';
ctx.fillRect(0, 0, 150, 75);
</script>

多媒体标签 (<audio> 和 <video>)




<!-- Audio -->
<audio controls>
  <source src="horse.ogg" type="audio/ogg">
  <source src="horse.mp3" type="audio/mpeg">
Your browser does not support the audio element.
</audio>
 
<!-- Video -->
<video width="320" height="240" controls>
  <source src="movie.mp4" type="video/mp4">
  <source src="movie.ogg" type="video/ogg">
Your browser does not support the video tag.
</video>

表单输入类型 (如email, url, number, range, date, datetime, datetime-local, month, week, time, search)




<form>
  Email: <input type="email" name="user_email">
  URL: <input type="url" name="user_url">
  Number: <input type="number" name="user_number" min="1" max="5" step="1">
  Range: <input type="range" name="user_range" min="1" max="10">
  Search: <input type="search" name="user_search">
  <input type="submit">
</form>

离线应用程序 (Application Cache)




<!DOCTYPE HTML>
<html manifest="example.appcache">
...

新的表格元素 (如caption, thead, tbody, col, colgroup)




<table>
  <caption>Table caption here</caption>
  <thead>
    <tr>
      <th>Header 1</th>
      <th>Header 2</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Row 1, Cell 1</td>
      <td>Row 1, Cell 2</td>
    </tr>
    <tr>
      <td>Row 2, Cell 1</td>
      <td>Row 2, Cell 2</td>
    </tr>
  </tbody>
</table>

服务器发送事件 (Server-Sent Events)




if(typeof(EventSource)!=="undefined") {
  var source=new EventSource

BAT大佬推荐使用的HTML5的十个功能

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