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javascript-skill.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JavaScript 奇技淫巧 -- by wanyi.css</title>
<meta name="description" content="web components ploymer">
<meta name="author" content="liuxin.rkl">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<link rel="stylesheet" href="css/reveal.min.css">
<link rel="stylesheet" href="css/theme/default.css" id="theme">
<!-- For syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!-- If the query includes 'print-pdf', include the PDF print sheet -->
<script>
if( window.location.search.match( /print-pdf/gi ) ) {
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = 'css/print/pdf.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
}
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section data-markdown>
<script type="text/template">
## JavaScript 奇技淫巧
</script>
</section>
<section>
<section>
<p>
遍历一个obj的属性到数组
</p>
</section>
<section data-markdown>
```js
var a=[];
for(a[a.length] in obj);
return a;
```
</section>
</section>
<section>
<section>
<p>
重复字符串(如abc=>abcabc)
</p>
</section>
<section data-markdown>
```js
function repeat(target,n){
return (new Array(n+1).join(target));
}
```
</section>
</section>
<section>
<section>
<p>
打乱数字数组的顺序
</p>
</section>
<section data-markdown>
```js
var numbers = [5, 458 , 120 , -215 , 228 , 400 , 122205, -85411];
numbers = numbers.sort(function(){ return Math.random() - 0.5});
/* numbers 数组将类似于 [120, 5, 228, -215, 400, 458, -85411, 122205] */
```
</section>
</section>
<section>
<section>
<p>
对象转换为数组
</p>
</section>
<section data-markdown>
```js
var argArray = Array.prototype.slice.call(arguments);
```
</section>
</section>
<section>
<section>
<p>
在条件中使用逻辑与或
</p>
</section>
<section data-markdown>
```js
var foo = 10;
foo == 10 && doSomething(); // is the same thing as if (foo == 10) doSomething();
foo == 5 || doSomething(); // is the same thing as if (foo != 5) doSomething();
```
</section>
</section>
<section data-markdown>
## 谢谢大家
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.min.js"></script>
<script>
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
theme: Reveal.getQueryHash().theme, // available themes are in /css/theme
transition: 'concave', // default/cube/page/concave/zoom/linear/fade/none
// Optional libraries used to extend on reveal.js
dependencies: [
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
{ src: 'plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }
]
});
</script>
</body>
</html>