<rt id="bn8ez"></rt>
<label id="bn8ez"></label>

  • <span id="bn8ez"></span>

    <label id="bn8ez"><meter id="bn8ez"></meter></label>

    thinking

    one platform thousands thinking

    jQuery hoverIntent

    http://cherne.net/brian/resources/jquery.hoverIntent.html

    What is hoverIntent?

    hoverIntent is a plug-in that attempts to determine the user's intent... like a crystal ball, only with mouse movement! It works like (and was derived from) hover. However, instead of immediately calling the onMouseOver function, it waits until the user's mouse slows down enough before making the call.

    Why? To delay or prevent the accidental firing of animations or ajax calls. Simple timeouts work for small areas, but if your target area is large it may execute regardless of intent.

    Download hoverIntent r6 (fully-commented, uncompressed)

    Download hoverIntent r6 (minified)

    hoverIntent r6 (2011) has all the same functionality of r5 (2007) except that the Google Chrome defect (known defects) is fixed once you upgrade to jQuery 1.5.1.

    Translations

    Беларуская courtesy Martha Ruszkowski

    Examples

    jQuery's hover (for reference)

    $("#demo1 li").hover( makeTall, makeShort )
    •  
    •  
    •  
    • hover ignores over/out events from children

    jQuery's built-in hover calls onMouseOver/onMouseOut functions immediately.

    hoverIntent as hover replacement

    $("#demo2 li").hoverIntent( makeTall, makeShort )
    •  
    •  
    •  
    • hoverIntent also ignores over/out events from children

    hoverIntent is interchangeable with jQuery's hover. It can use the same exact onMouseOver and onMouseOut functions and it passes the same this and event objects to those functions.

    hoverIntent with configuration object

    var config = {    
    over: makeTall, // function = onMouseOver callback (REQUIRED)
    timeout: 500, // number = milliseconds delay before onMouseOut
    out: makeShort // function = onMouseOut callback (REQUIRED)
    };

    $("#demo3 li").hoverIntent( config )
    •  
    •  
    •  
    •  

    To override the default configuration of hoverIntent, pass it an object as the first (and only) parameter. The object must contain "over" and "out" functions, in addition to any other options you'd like to override.

    Basic Configuration Options

    The "timeout" delay (by default set to 0) will mostly likely be the one you'll want to override. The "over" and "out" functions are required but nothing prevents you from sending an empty function(){} to either.

    over:

    Required. The function you'd like to call onMouseOver. Your function receives the same "this" and "event" objects as it would from jQuery's hover method.

    timeout:

    A simple delay, in milliseconds, before the "out" function is called. If the user mouses back over the element before the timeout has expired the "out" function will not be called (nor will the "over" function be called). This is primarily to protect against sloppy/human mousing trajectories that temporarily (and unintentionally) take the user off of the target element... giving them time to return. Default timeout: 0

    out:

    Required. The function you'd like to call onMouseOut. Your function receives the same "this" and "event" objects as it would from jQuery's hover method. Note, hoverIntent will only call the "out" function if the "over" function has been called on that same run.

    Advanced Configuration Options

    When choosing the default settings for hoverIntent I tried to find the best possible balance between responsiveness and frequency of false positives. Modify these if you are brave, test tirelessly, and completely understand what you are doing.

    sensitivity:

    If the mouse travels fewer than this number of pixels between polling intervals, then the "over" function will be called. With the minimum sensitivity threshold of 1, the mouse must not move between polling intervals. With higher sensitivity thresholds you are more likely to receive a false positive. Default sensitivity: 7

    interval:

    The number of milliseconds hoverIntent waits between reading/comparing mouse coordinates. When the user's mouse first enters the element its coordinates are recorded. The soonest the "over" function can be called is after a single polling interval. Setting the polling interval higher will increase the delay before the first possible "over" call, but also increases the time to the next point of comparison. Default interval: 100

    Notice of DOM Manipulation

    hoverIntent adds two custom attributes to every DOM element it's assigned to. For example: <li hoverIntent_t="" hoverIntent_s="">

    • hoverIntent_t is the polling interval timer, or the mouseOut timer.
    • hoverIntent_s stores the state to prevent unmatched function calls.

    Timers are stored as integers, so there should not be any trouble with memory leaks. hoverIntent state is also stored as an integer.

    Known Defects

    hoverIntent r5 suffers from a defect in Google Chrome that improperly triggers mouseout when entering a child input[type="text"] element. hoverIntent r6 uses the same mouseenter/mouseleave special events as jQuery's built-in hover, and jQuery 1.5.1 patched this issue. Thanks to Colin Stuart for tipping me off about this and for providing isolated code to demonstrate/test.

    This page uses jQuery 1.5.1+ and hoverIntent r6, so when your cursor goes over the text input nothing should change (it should continue to read "enter parent" because you are still over this paragraph).

    However, if you were using Google Chrome and if this page were using an older version of jQuery or hoverIntent, moving the cursor over the text input would improperly trigger the mouseout event, and the value would change to "leave parent".

    If you place an element with onMouseOut event listeners flush against the edge of the browser chrome, sometimes Internet Explorer does not trigger an onMouseOut event immediately if your mouse leaves the document. hoverIntent does not correct for this.

    jQuery's hover can take both a handlerIn and a handlerOut or just a handlerIn. The current version of hoverIntent requires both handlerIn and handlerOut or a single configuration object. It was not designed to take just a handlerIn like hover. This will be addressed in a future release.

    Please email me ( brian@cherne.net ) if you have questions or would like to notify me of any defects. I will tweet about any updates from @briancherne using the tags #hoverIntent #jQuery.

    The Future of hoverIntent

    hoverIntent r7 (in development) will be backwards compatible with all current implementations and include hoverIntent custom events.

    Release History

    • r7 = In development. Adding custom events.
    • r6 = Current stable release. Updated to correct for Google Chrome defect.
    • r5 = Added state to prevent unmatched function calls. This release (and previous releases) suffers from a defect in Google Chrome that improperly triggers mouseout when entering a child input[type=text] element.
    • r4 = Fixed polling interval timing issue (now uses a self-calling timeout to avoid interval irregularities).
    • r3 = Developer-only release for debugging.
    • r2 = Added timeout and interval references to DOM object -- keeps timers separate from each other. Added configurable options. Added timeout option to delay onMouseOut function call. Fixed two-interval mouseOver bug (now setting pX and pY onMouseOver instead of hardcoded value).
    • r1 = Initial release to jQuery discussion forum for feedback.

    posted on 2011-11-02 10:40 lau 閱讀(1028) 評論(0)  編輯  收藏 所屬分類: Web

    主站蜘蛛池模板: 一级毛片直播亚洲| 国产午夜免费秋霞影院| 久久综合日韩亚洲精品色| 人人公开免费超级碰碰碰视频| 日韩一区二区免费视频| 黑人粗长大战亚洲女2021国产精品成人免费视频 | 亚洲国产另类久久久精品| 国产免费区在线观看十分钟| 亚洲情侣偷拍精品| 香蕉视频在线免费看| 亚洲色爱图小说专区| 无码精品国产一区二区三区免费 | 无码国产精品一区二区免费| 亚洲伊人久久精品| 在线观看成人免费视频| 亚洲精品国产第一综合99久久| 国产成人无码区免费A∨视频网站 国产成人涩涩涩视频在线观看免费 | 亚洲午夜爱爱香蕉片| 光棍天堂免费手机观看在线观看| 久久青青草原亚洲AV无码麻豆| 国产91免费在线观看| 亚洲精品久久久久无码AV片软件| 免费一级特黄特色大片在线观看| av网站免费线看| 久久久亚洲AV波多野结衣| 最近免费中文字幕视频高清在线看| 久久亚洲精品无码网站| 最新精品亚洲成a人在线观看| 国产免费无码AV片在线观看不卡| 亚洲精品第一国产综合精品| 噜噜嘿在线视频免费观看| 香蕉国产在线观看免费| 亚洲AV一宅男色影视| 成人免费AA片在线观看| 搜日本一区二区三区免费高清视频 | 免费国产黄网站在线观看可以下载| 亚洲一级毛片免观看| 免费一级做a爰片久久毛片潮喷| 色播在线永久免费视频网站| 亚洲午夜在线一区| 亚洲成a人无码av波多野按摩|