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最新评论
it should worth an article specifically for this topic to clone some elements, most of the cases should be fairly straight forward to clone some elements.
However, the complication comes with the internet explorer, where you have the behaviors that, when they occurs in conjuction, result in a very frustrating scenario for handling cloning.
first, when cloning an element, Internet explorer copies over all event handlers onto the cloned element. Additionally, any custom expandos attached to the cloning are also carried over.
while you cannot just clone the element in IE and then remove the attached events or expandos, because ironically doing so will remove the event handlers and others from the original elements as well.
the solution just clone the element, inject it into another element, then read the innerHTML of the element - and convert that back into a DOM node.
while it sounds all good, but is not yet the whole picture, nasty problems still exist in IE, where
- innerHTML /outerHTML (for that matter) of an elemnt does not always relfect to the correct status, if the name attributes of input elements are changed dynamically - the new value isn't represented in the innerHTML.
- XML DOM elemnts does not have innerHTML (we need to look up what is the definition of innerHTML)
/** *@Comment : this code is not supposed to be used directly, instead it is written here to show you * the algorithm to do cloning in libraries such as jQuery. In real use case, you may directly use the jQuery libraries */ function clone() { var ret = this.map(function () { if (!jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this)) { var clone = this.cloneNode(true), container = document.createElement("div"); container.appendChild(clone); return jQuery.clean([container.innerHTML])[0]; } else { return this.cloneNode(true); } }); var clone = ret.find("*").andSelf().each(function () { if (this[expando] !== undefined) this[expando] = null; }); return ret; }
发表评论
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javascript - trick to cross browser DOM ready event
2012-08-24 08:23 901the "ready" event ... -
javascript - trick to simulate mouseenter and mouseleave
2012-08-23 08:31 2228Previously we discussed javasc ... -
javascript - trick to simulate the change event
2012-08-22 08:51 1612In the previous discussion a ... -
javascript - trick to simulate bubbling submit event
2012-08-22 08:03 884In the previous discussion abou ... -
javascript - trick to implement bubbling submit event
2012-08-23 07:55 671Following up to the javascrip ... -
javascript - trick to detect bubbling supportability
2012-08-20 22:22 932Event delegation is oe of the b ... -
javascript - trigger event and custom events
2012-08-20 21:58 2045In the previous post - javascri ... -
javascript - trick to handlers management
2012-08-20 08:19 995We have discussed "javascr ... -
javascript - trick to centralized store
2012-08-20 07:52 785For a number of reasons it's ... -
javascript - trick to fix the event object
2012-08-20 07:47 850Many browsers, especially In ... -
javascript - tricks to deal with colors
2012-08-15 08:34 742There are a couple of ways to r ... -
javascript - trick to manipulate the opacity
2012-08-15 08:26 744All other browsre may have supp ... -
javascript - trick to test visibility of an element
2012-08-15 08:15 497though there is a visible prope ... -
javascript - trick to get and set height and width
2012-08-15 08:05 519when looking at properties t ... -
javascript - trick to set/get attributes that expects px values
2012-08-16 11:00 495When setting a number into a ... -
javascript - trick to get and set CSS style
2012-08-16 11:00 718while it will not be so much tr ... -
javascript - trick to normalize href for IE
2012-08-16 10:59 508IE is again the only browser th ... -
javascript - trick IE form and its expando attribute
2012-08-16 10:59 1009there is a known issue that if ... -
javascript expando and attributes
2012-08-14 08:15 1011expando is something like this ... -
javascript - trick to getText and setText
2012-08-14 07:40 1106it is not as simple as you thin ...
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