H 5新規API-表示、記憶
2681 ワード
まず、フルスクリーンを呼び出し、フルスクリーンを終了するコードを見てみましょう.
<button type="button" name="button"> </button>
<button type="button" name="button"> </button>
<script type="text/javascript">
document.querySelectorAll("button")[0].onclick = function(){
console.log(document.body.requestFullscreen)
document.body.webkitRequestFullScreen();
}
document.querySelectorAll("button")[1].onclick = function(){
document.webkitCancelFullScreen();
}
</script>
</code></pre>
<p>h5 visibilitychange 。</p>
<pre><code>
<title/>
<button type="button" name="button"> </button>
<button type="button" name="button"> </button>
<script type="text/javascript">
console.log(document.visibilityState);
document.addEventListener("visibilitychange",function(){
console.log(document.visibilityState);
console.log(document.hidden);
})
</script>
</code></pre>
<h2> </h2>
<p> <em> localStorage</em> <em> sessionStorage</em>， cookie 。 5M。<br/> ： ，API 。<br/> cookie 4kb，api ， document.cookie， ， ， 。<br/> <em>localStorage</em> ， ， 。<br/> sessionStorage ，localStorage 。</p>
<pre><code>
<title/>
<script type="text/javascript">
var obj ={age:12,address:" "};
console.log(localStorage);
localStorage.setItem("user","admin");
localStorage.setItem("desc",JSON.stringify(obj));
console.log(localStorage.getItem("user"));
console.log(JSON.parse(localStorage.getItem("desc")));
localStorage.setItem("user","admin");
localStorage.removeItem("user");
</script>
</code></pre>
<h2> </h2>
<p>geolocation API， 。<br/> ， https 。<br/> localhost （ ：IP ）<br/> 。<br/> 。</p>
<pre><code>
<title/>
<script type="text/javascript">
console.log(navigator)
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(coords){
console.log(coords)
},function(err){
});
}
</script>
</code></pre>
<p>navigator.geolocation.getCurrentPosition(successCallback,errorCallback[,options])<br/> successCallback <br/> errorCallback </p>
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