HTML5基础知识 - JavaScript API - Web Storage - localStorage

HTML5本地存储API的学习

storage

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编译

JavaScript

// Generate the little markup from javascript
document.querySelector('#content').innerHTML = 
    '<p><em>Save text locally (it will still be available after restarting your browser)</em></p>';
var area = document.createElement('textarea');
area.style.width = '300px'; 
area.style.height = '150px';
document.querySelector('#content').appendChild(area);

// place content from previous edit
if (!area.value) {
  area.value = window.localStorage.getItem('value');
}
 
// your content will be saved locally
area.addEventListener('keyup', function () {
  window.localStorage.setItem('value', area.value);
  window.localStorage.setItem('timestamp', (new Date()).getTime());
}, false);

updateLog();
setInterval(updateLog, 5000); // show time every 5 seconds

编译

CSS

body {
  font: 100% "Lucida Grande", "Trebuchet MS", Verdana, sans-serif;
  margin: 0;
}

#log {
  background-color: gray;
  color: white;
  padding: 10px;
  margin-left: 20px;
  display: inline-block;
}

header {
  background: #FFCC99;
  color: white;
  -moz-box-shadow: 0 2px 8px -3px rgba(0,0,0,.5), 0 1.4em 2em -0.7em rgba(255, 255, 255, .2) inset;
  -webkit-box-shadow: 0 2px 8px -3px rgba(0,0,0,.5), 0 1.4em 2em -0.7em rgba(255, 255, 255, .2) inset;
  box-shadow: 0 2px 8px -3px rgba(0,0,0,.5), 0 1.4em 2em -0.7em rgba(255, 255, 255, .2) inset;
  text-shadow: 1px 1px 1px #444;
}

header h1, header h2 {
  display: inline-block;
  padding: 12px 15px;
  font-size: 105%;
  line-height: 1;
  margin: 0;
}

header h1 {
  background: #FF9966;
}

#excerpt {
  padding: 20px;
  background: #fcfaea;
}

.arrow-right {
  display: inline-block;
  width: 0;
  height: 0;
  border-top: 18px solid transparent;
  border-bottom: 18px solid transparent;
  border-left: 18px solid #FF9966;
  margin-bottom: -11px;
}

#content {
  padding: 20px;
  color: #333;
}

input, textarea {
  font-size: 100%;
}

HTML

HTML5本地存储API的学习

storage

编辑器支持Emmet

快捷键

HTML5本地存储API的学习

storage

编辑器支持Emmet

快捷键

语言：

语言：

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