发布于 2017-06-25 01:06:12 | 79 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的Javascript教程,程序狗速度看过来!

JavaScript客户端脚本语言

Javascript 是一种由Netscape的LiveScript发展而来的原型化继承的基于对象的动态类型的区分大小写的客户端脚本语言,主要目的是为了解决服务器端语言,比如Perl,遗留的速度问题,为客户提供更流畅的浏览效果。


使用javascript来写复制到剪贴板的代码,一般都是浏览器不兼容的。所以采用flash的方式,模拟一个层,再来复制,就可以做到全部浏览器都适用,具体实现如下,感兴趣的朋友可以参考下哈
目前,如果使用javascript来写复制到剪贴板的代码,一般都是浏览器不兼容的。所以采用flash的方式,模拟一个层,再来复制,就可以做到全部浏览器都适用哦~

需要下载一个swf文件,和一个js文件。把这两个文件,和htm放到一起。
图示:


必须放在服务器端使用哦。
图示:


JS代码:
 
ZeroClipboard.js 
// Simple Set Clipboard System 
// Author: Joseph Huckaby 
var ZeroClipboard = { 
version: "1.0.7", 
clients: {}, // registered upload clients on page, indexed by id 
moviePath: 'ZeroClipboard.swf', // URL to movie 
nextId: 1, // ID of next movie 
$: function(thingy) { 
// simple DOM lookup utility function 
if (typeof(thingy) == 'string') thingy = document.getElementById(thingy); 
if (!thingy.addClass) { 
// extend element with a few useful methods 
thingy.hide = function() { this.style.display = 'none'; }; 
thingy.show = function() { this.style.display = ''; }; 
thingy.addClass = function(name) { this.removeClass(name); this.className += ' ' + name; }; 
thingy.removeClass = function(name) { 
var classes = this.className.split(/\s+/); 
var idx = -1; 
for (var k = 0; k < classes.length; k++) { 
if (classes[k] == name) { idx = k; k = classes.length; } 
} 
if (idx > -1) { 
classes.splice( idx, 1 ); 
this.className = classes.join(' '); 
} 
return this; 
}; 
thingy.hasClass = function(name) { 
return !!this.className.match( new RegExp("\\s*" + name + "\\s*") ); 
}; 
} 
return thingy; 
}, 
setMoviePath: function(path) { 
// set path to ZeroClipboard.swf 
this.moviePath = path; 
}, 
dispatch: function(id, eventName, args) { 
// receive event from flash movie, send to client 
var client = this.clients[id]; 
if (client) { 
client.receiveEvent(eventName, args); 
} 
}, 
register: function(id, client) { 
// register new client to receive events 
this.clients[id] = client; 
}, 
getDOMObjectPosition: function(obj, stopObj) { 
// get absolute coordinates for dom element 
var info = { 
left: 0, 
top: 0, 
width: obj.width ? obj.width : obj.offsetWidth, 
height: obj.height ? obj.height : obj.offsetHeight 
}; 
while (obj && (obj != stopObj)) { 
info.left += obj.offsetLeft; 
info.top += obj.offsetTop; 
obj = obj.offsetParent; 
} 
return info; 
}, 
Client: function(elem) { 
// constructor for new simple upload client 
this.handlers = {}; 
// unique ID 
this.id = ZeroClipboard.nextId++; 
this.movieId = 'ZeroClipboardMovie_' + this.id; 
// register client with singleton to receive flash events 
ZeroClipboard.register(this.id, this); 
// create movie 
if (elem) this.glue(elem); 
} 
}; 
ZeroClipboard.Client.prototype = { 
id: 0, // unique ID for us 
ready: false, // whether movie is ready to receive events or not 
movie: null, // reference to movie object 
clipText: '', // text to copy to clipboard 
handCursorEnabled: true, // whether to show hand cursor, or default pointer cursor 
cssEffects: true, // enable CSS mouse effects on dom container 
handlers: null, // user event handlers 
glue: function(elem, appendElem, stylesToAdd) { 
// glue to DOM element 
// elem can be ID or actual DOM element object 
this.domElement = ZeroClipboard.$(elem); 
// float just above object, or zIndex 99 if dom element isn't set 
var zIndex = 99; 
if (this.domElement.style.zIndex) { 
zIndex = parseInt(this.domElement.style.zIndex, 10) + 1; 
} 
if (typeof(appendElem) == 'string') { 
appendElem = ZeroClipboard.$(appendElem); 
} 
else if (typeof(appendElem) == 'undefined') { 
appendElem = document.getElementsByTagName('body')[0]; 
} 
// find X/Y position of domElement 
var box = ZeroClipboard.getDOMObjectPosition(this.domElement, appendElem); 
// create floating DIV above element 
this.div = document.createElement('div'); 
var style = this.div.style; 
style.position = 'absolute'; 
style.left = '' + box.left + 'px'; 
style.top = '' + box.top + 'px'; 
style.width = '' + box.width + 'px'; 
style.height = '' + box.height + 'px'; 
style.zIndex = zIndex; 
if (typeof(stylesToAdd) == 'object') { 
for (addedStyle in stylesToAdd) { 
style[addedStyle] = stylesToAdd[addedStyle]; 
} 
} 
// style.backgroundColor = '#f00'; // debug 
appendElem.appendChild(this.div); 
this.div.innerHTML = this.getHTML( box.width, box.height ); 
}, 
getHTML: function(width, height) { 
// return HTML for movie 
var html = ''; 
var flashvars = 'id=' + this.id + 
'&width=' + width + 
'&height=' + height; 
if (navigator.userAgent.match(/MSIE/)) { 
// IE gets an OBJECT tag 
var protocol = location.href.match(/^https/i) ? 'https://' : 'http://'; 
html += '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="'+protocol+'download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0" width="'+width+'" height="'+height+'" id="'+this.movieId+'" align="middle"><param name="allowScriptAccess" value="always" /><param name="allowFullScreen" value="false" /><param name="movie" value="'+ZeroClipboard.moviePath+'" /><param name="loop" value="false" /><param name="menu" value="false" /><param name="quality" value="best" /><param name="bgcolor" value="#ffffff" /><param name="flashvars" value="'+flashvars+'"/><param name="wmode" value="transparent"/></object>'; 
} 
else { 
// all other browsers get an EMBED tag 
html += '<embed id="'+this.movieId+'" src="'+ZeroClipboard.moviePath+'" loop="false" menu="false" quality="best" bgcolor="#ffffff" width="'+width+'" height="'+height+'" name="'+this.movieId+'" align="middle" allowScriptAccess="always" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" flashvars="'+flashvars+'" wmode="transparent" />'; 
} 
return html; 
}, 
hide: function() { 
// temporarily hide floater offscreen 
if (this.div) { 
this.div.style.left = '-2000px'; 
} 
}, 
show: function() { 
// show ourselves after a call to hide() 
this.reposition(); 
}, 
destroy: function() { 
// destroy control and floater 
if (this.domElement && this.div) { 
this.hide(); 
this.div.innerHTML = ''; 
var body = document.getElementsByTagName('body')[0]; 
try { body.removeChild( this.div ); } catch(e) {;} 
this.domElement = null; 
this.div = null; 
} 
}, 
reposition: function(elem) { 
// reposition our floating div, optionally to new container 
// warning: container CANNOT change size, only position 
if (elem) { 
this.domElement = ZeroClipboard.$(elem); 
if (!this.domElement) this.hide(); 
} 
if (this.domElement && this.div) { 
var box = ZeroClipboard.getDOMObjectPosition(this.domElement); 
var style = this.div.style; 
style.left = '' + box.left + 'px'; 
style.top = '' + box.top + 'px'; 
} 
}, 
setText: function(newText) { 
// set text to be copied to clipboard 
this.clipText = newText; 
if (this.ready) this.movie.setText(newText); 
}, 
addEventListener: function(eventName, func) { 
// add user event listener for event 
// event types: load, queueStart, fileStart, fileComplete, queueComplete, progress, error, cancel 
eventName = eventName.toString().toLowerCase().replace(/^on/, ''); 
if (!this.handlers[eventName]) this.handlers[eventName] = []; 
this.handlers[eventName].push(func); 
}, 
setHandCursor: function(enabled) { 
// enable hand cursor (true), or default arrow cursor (false) 
this.handCursorEnabled = enabled; 
if (this.ready) this.movie.setHandCursor(enabled); 
}, 
setCSSEffects: function(enabled) { 
// enable or disable CSS effects on DOM container 
this.cssEffects = !!enabled; 
}, 
receiveEvent: function(eventName, args) { 
// receive event from flash 
eventName = eventName.toString().toLowerCase().replace(/^on/, ''); 
// special behavior for certain events 
switch (eventName) { 
case 'load': 
// movie claims it is ready, but in IE this isn't always the case... 
// bug fix: Cannot extend EMBED DOM elements in Firefox, must use traditional function 
this.movie = document.getElementById(this.movieId); 
if (!this.movie) { 
var self = this; 
setTimeout( function() { self.receiveEvent('load', null); }, 1 ); 
return; 
} 
// firefox on pc needs a "kick" in order to set these in certain cases 
if (!this.ready && navigator.userAgent.match(/Firefox/) && navigator.userAgent.match(/Windows/)) { 
var self = this; 
setTimeout( function() { self.receiveEvent('load', null); }, 100 ); 
this.ready = true; 
return; 
} 
this.ready = true; 
this.movie.setText( this.clipText ); 
this.movie.setHandCursor( this.handCursorEnabled ); 
break; 
case 'mouseover': 
if (this.domElement && this.cssEffects) { 
this.domElement.addClass('hover'); 
if (this.recoverActive) this.domElement.addClass('active'); 
} 
break; 
case 'mouseout': 
if (this.domElement && this.cssEffects) { 
this.recoverActive = false; 
if (this.domElement.hasClass('active')) { 
this.domElement.removeClass('active'); 
this.recoverActive = true; 
} 
this.domElement.removeClass('hover'); 
} 
break; 
case 'mousedown': 
if (this.domElement && this.cssEffects) { 
this.domElement.addClass('active'); 
} 
break; 
case 'mouseup': 
if (this.domElement && this.cssEffects) { 
this.domElement.removeClass('active'); 
this.recoverActive = false; 
} 
break; 
} // switch eventName 
if (this.handlers[eventName]) { 
for (var idx = 0, len = this.handlers[eventName].length; idx < len; idx++) { 
var func = this.handlers[eventName][idx]; 
if (typeof(func) == 'function') { 
// actual function reference 
func(this, args); 
} 
else if ((typeof(func) == 'object') && (func.length == 2)) { 
// PHP style object + method, i.e. [myObject, 'myMethod'] 
func[0][ func[1] ](this, args); 
} 
else if (typeof(func) == 'string') { 
// name of function 
window[func](this, args); 
} 
} // foreach event handler defined 
} // user defined handler for event 
} 
}; 

html代码:
 
a.htm 
<html> 
<head> 
<title>Zero Clipboard Test</title> 
<style type="text/css"> 
body { font-family:arial,sans-serif; font-size:9pt; } 
.my_clip_button { width:150px; text-align:center; border:1px solid black; background-color:#ccc; margin:10px; padding:10px; cursor:default; font-size:9pt; } 
.my_clip_button.hover { background-color:#eee; } 
.my_clip_button.active { background-color:#aaa; } 
</style> 
</head> 
<body> 
<div id="d_clip_container" style="position:relative"> 
<div id="d_clip_button" class="my_clip_button"><b>Copy To Clipboard...</b></div> 
</div> 
<textarea id="myresource" class="clearfix" onChange="clip.setText(this.value)">我复制</textarea> 
<script type="text/javascript" src="ZeroClipboard.js"></script> 
<script language="JavaScript"> 
var clip = null; 
function $(id) { return document.getElementById(id); } 
function init() { 
clip = new ZeroClipboard.Client(); 
clip.setHandCursor( true ); 
clip.addEventListener('load', function (client) { 
debugstr("Flash movie loaded and ready."); 
}); 
clip.addEventListener('mouseOver', function (client) { 
// update the text on mouse over 
clip.setText( $('myresource').value ); 
}); 
clip.addEventListener('complete', function (client, text) { 
debugstr("Copied text to clipboard: " + text ); 
}); 
clip.glue( 'd_clip_button', 'd_clip_container' ); 
} 
setTimeout(function(){ 
init(); 
},1500); 
</script> 
</body> 
</html> 

flash文件请自己到网上下载哈~

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