複製代碼 代碼如下:
/**
* 複製元素樣式
* @param {HTMLElement} 被複製的元素
* @param {Boolean} 是否啟用緩衝（預設true）
* @return {String} css類名
*/
var cloneStyle = (function (doc) {
var rstyle = /^(number|string)$/,
cloneName = '${cloneName}',
sData = {},
addHeadStyle = function (content) {
var style = sData[doc];
if (!style) {
style = sData[doc] = doc.createElement('style');
doc.getElementsByTagName('head')[0].appendChild(style);
};
style.styleSheet && (style.styleSheet.cssText += content) || style.appendChild(doc.createTextNode(content));
},
getStyle = 'getComputedStyle' in window ? function (elem, name) {
return getComputedStyle(elem, null)[name];
} : function (elem, name) {
return elem.currentStyle[name];
};
return function (source, cache) {
if (!cache && source[cloneName]) return source[cloneName];
var className, name,
cssText = [],
sStyle = source.style;
for (name in sStyle) {
val = getStyle(source, name);
if (val !== '' && rstyle.test(typeof val)) {
name = name.replace(/([A-Z])/g,"-$1").toLowerCase();
cssText.push(name);
cssText.push(':');
cssText.push(val);
cssText.push(';');
};
};
cssText = cssText.join('');
source[cloneName] = className = 'clone' + (new Date).getTime();
addHeadStyle('.' + className + '{' + cssText + '}');
return className;
};
}(document));
示範：
<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>cloneStyle</title> <script type="text/javascript"> /** * 複製元素樣式 * @author tang bin * @version 0.1 * @see http://www.planeart.cn/?p=1499 * @param {HTMLElement} 被複製的元素 * @param {Boolean} 是否啟用緩衝（預設true） * @return {String} css類名 */ var cloneStyle = (function (doc) { var rstyle = /^(number|string)$/, cloneName = '${cloneName}', sData = {}, addHeadStyle = function (content) { var style = sData[doc]; if (!style) { style = sData[doc] = doc.createElement('style'); doc.getElementsByTagName('head')[0].appendChild(style); }; style.styleSheet && (style.styleSheet.cssText += content) || style.appendChild(doc.createTextNode(content)); }, getStyle = 'getComputedStyle' in window ? function (elem, name) { return getComputedStyle(elem, null)[name]; } : function (elem, name) { return elem.currentStyle[name]; }; return function (source, cache) { if (!cache && source[cloneName]) return source[cloneName]; var className, name, cssText = [], sStyle = source.style; for (name in sStyle) { val = getStyle(source, name); if (val !== '' && rstyle.test(typeof val)) { name = name.replace(/([A-Z])/g,"-$1").toLowerCase(); cssText.push(name); cssText.push(':'); cssText.push(val); cssText.push(';'); }; }; cssText = cssText.join(''); source[cloneName] = className = 'clone' + (new Date).getTime(); addHeadStyle('.' + className + '{' + cssText + '}'); return className; }; }(document)); </script> <style> div { width:150px; margin:20px; background:#FBFCFD; border:1px solid #D0DCE8; text-align:center; line-height:3em; font-size:1.5em; } .skin { -webkit-border-radius:5px; -moz-border-radius:5px; border-radius:5px; } #div { width:300px; height:300px; } span { border:1px solid #D0DCE8; color:#F00; } </style> </head> <body> <button onclick="document.getElementById('span').className = cloneStyle(document.getElementById('div'));">複製div的最終樣式到span</button> <div id="div" class="skin">我是DIV標籤</div> <span id="span">我是SPAN標籤</span> </body> </html>
[Ctrl+A 全選 注:如需引入外部Js需重新整理才能執行]
