如何使用qrcode和ityped插件实现长尾词动态输入效果？
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本文共计714个文字，预计阅读时间需要3分钟。
1. 二维码生成插件（基于jQuery） 下载地址：[GitHub](https://github.com/jeromeetienne/jquery-qrcode) 或 npm下载 引入方式：直接在HTML中引入CDN
1.qrcode二维码插件（依赖于jQuery）github下载地址：github.com/jeromeetienne/jquery-qrcode
或npm下载
（1）引入
CDN方式
<script type='text/javascript' src='cdn.staticfile.org/jquery/2.1.1/jquery.min.js'></script>
<script type="text/javascript" src="cdn.staticfile.org/jquery.qrcode/1.0/jquery.qrcode.min.js"></script>
本地js文件引
<script src="js/qrcode.js"></script>
<script src="./js/jquery.qrcode.js"></script>
（2）使用
在页面中设置一个用于放置二维码的容器
<div id=”output”></div>
使用qrcode生成二维码
$("#output").qrcode({
text : "jetienne.com", //设置二维码内容
render : "table",//设置渲染方式 （有两种方式 table和canvas，默认是canvas）
width : 256, //设置宽度
height : 256, //设置高度
typeNumber : -1, //计算模式
correctLevel : 2,//纠错等级 0-3 7% 15% 25% 30% 纠错等级越高，越容易被扫描
background : "black",//背景颜色
foreground : "#fff" //前景颜色
})
支持中文
function toUtf8(str) {
var out,//输出
i,//字符索引
len,//长度
c;//charCodeAt 编码后的字符
out = "";
len = str.length;
for(i = 0; i < len; i++) {
c = str.charCodeAt(i);
if((c >= 0x0001) && (c <= 0x007F)) {
out += str.charAt(i);
} else if(c > 0x07FF) {
out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
} else {
out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
}
}
return out;
}
2.iTyped动态打字效果(无需任何依赖)
github下载地址：github.com/luisvinicius167/ityped/commit/b11084c63429a691ed1a7562bf47bcf2246220c2
(1)引入：
<script src="./js/index.min.js"></script>
(2)使用：
光标闪烁：
.ityped-cursor {
font-size: 2.2rem;
opacity: 1;
animation: blink 0.3s infinite;
animation-direction: alternate;
}
@keyframes blink {
100% {
opacity: 0;
}
}
初始化：
<div id="app">
<span id="ityped"></span>
</div>
<script>
ityped.init("#ityped", {
showCursor: true,
strings: ['Very nice project!', 'Yeah!', 'Shure, awesome!'],
cursorChar:'||'
})
</script>
其他参数说明：
Ityped.init("#element", {
/**
* @param {Array} strings An array with the strings that will be animated
*/
strings: ['Put your strings here...', 'and Enjoy!']
/**
* @param {Number} typeSpeed Type speed in milliseconds
*/
typeSpeed: 100,
/**
* @param {Number} backSpeed Type back speed in milliseconds
*/
backSpeed: 50,
/**
* @param {Number} startDelay Time before typing starts
*/
startDelay: 500,
/**
* @param {Number} backDelay Time before backspacing
*/
backDelay: 500,
/**
* @param {Boolean} loop The animation loop
*/
loop: false,
/**
* @param {Boolean} showCursor Show the cursor element
*/
showCursor: true,
/**
* @param {Boolean} placeholder Write the string in the placeholder content
*/
placeholder: false,
/**
* @param {Boolean} disableBackTyping Disable back typing for the last string sentence
*/
disableBackTyping: false,
/**
* @property {String} cursorChar character for cursor
*/
cursorChar: "|",
// optional: The callback called (if `loop` is false)
// once the last string was typed
/**
* @property {Function} onFinished The callback called , if `loop` is false,
* once the last string was typed
*/
onFinished: function(){},
}
本文共计714个文字，预计阅读时间需要3分钟。
1. 二维码生成插件（基于jQuery） 下载地址：[GitHub](https://github.com/jeromeetienne/jquery-qrcode) 或 npm下载 引入方式：直接在HTML中引入CDN
1.qrcode二维码插件（依赖于jQuery）github下载地址：github.com/jeromeetienne/jquery-qrcode
或npm下载
（1）引入
CDN方式
<script type='text/javascript' src='cdn.staticfile.org/jquery/2.1.1/jquery.min.js'></script>
<script type="text/javascript" src="cdn.staticfile.org/jquery.qrcode/1.0/jquery.qrcode.min.js"></script>
本地js文件引
<script src="js/qrcode.js"></script>
<script src="./js/jquery.qrcode.js"></script>
（2）使用
在页面中设置一个用于放置二维码的容器
<div id=”output”></div>
使用qrcode生成二维码
$("#output").qrcode({
text : "jetienne.com", //设置二维码内容
render : "table",//设置渲染方式 （有两种方式 table和canvas，默认是canvas）
width : 256, //设置宽度
height : 256, //设置高度
typeNumber : -1, //计算模式
correctLevel : 2,//纠错等级 0-3 7% 15% 25% 30% 纠错等级越高，越容易被扫描
background : "black",//背景颜色
foreground : "#fff" //前景颜色
})
支持中文
function toUtf8(str) {
var out,//输出
i,//字符索引
len,//长度
c;//charCodeAt 编码后的字符
out = "";
len = str.length;
for(i = 0; i < len; i++) {
c = str.charCodeAt(i);
if((c >= 0x0001) && (c <= 0x007F)) {
out += str.charAt(i);
} else if(c > 0x07FF) {
out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F));
out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
} else {
out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F));
out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F));
}
}
return out;
}
2.iTyped动态打字效果(无需任何依赖)
github下载地址：github.com/luisvinicius167/ityped/commit/b11084c63429a691ed1a7562bf47bcf2246220c2
(1)引入：
<script src="./js/index.min.js"></script>
(2)使用：
光标闪烁：
.ityped-cursor {
font-size: 2.2rem;
opacity: 1;
animation: blink 0.3s infinite;
animation-direction: alternate;
}
@keyframes blink {
100% {
opacity: 0;
}
}
初始化：
<div id="app">
<span id="ityped"></span>
</div>
<script>
ityped.init("#ityped", {
showCursor: true,
strings: ['Very nice project!', 'Yeah!', 'Shure, awesome!'],
cursorChar:'||'
})
</script>
其他参数说明：
Ityped.init("#element", {
/**
* @param {Array} strings An array with the strings that will be animated
*/
strings: ['Put your strings here...', 'and Enjoy!']
/**
* @param {Number} typeSpeed Type speed in milliseconds
*/
typeSpeed: 100,
/**
* @param {Number} backSpeed Type back speed in milliseconds
*/
backSpeed: 50,
/**
* @param {Number} startDelay Time before typing starts
*/
startDelay: 500,
/**
* @param {Number} backDelay Time before backspacing
*/
backDelay: 500,
/**
* @param {Boolean} loop The animation loop
*/
loop: false,
/**
* @param {Boolean} showCursor Show the cursor element
*/
showCursor: true,
/**
* @param {Boolean} placeholder Write the string in the placeholder content
*/
placeholder: false,
/**
* @param {Boolean} disableBackTyping Disable back typing for the last string sentence
*/
disableBackTyping: false,
/**
* @property {String} cursorChar character for cursor
*/
cursorChar: "|",
// optional: The callback called (if `loop` is false)
// once the last string was typed
/**
* @property {Function} onFinished The callback called , if `loop` is false,
* once the last string was typed
*/
onFinished: function(){},
}