一个轻量级但有用的jQuery用户意图检测插件，用于扩展jQuery的悬停方法，该方法会延迟handlerIn函数，直到用户真正想悬停在特定元素上。非常适合防止鼠标指针进入和离开元素时意外触发悬停事件。

如何使用它:

1.在jquery JavaScript库之后加载JavaScript文件“jquery.haverIntent.js”插件，hoverIntent即可使用。

<script src="//code.jquery.com/jquery.min.js"></script>
<script src="jquery.hoverIntent.js"></script>

2.基本用法。就像.hover()方法

• 手柄输入：函数OR配置对象
• 手柄输出：用于委托或未定义的函数或选择器

.hoverIntent( handlerIn, handlerOut )
.hoverIntent( handlerInOut )

3.基本用法。有活动委托。

• 手柄输入：函数OR配置对象
• 手柄输出：用于委托或未定义的函数或选择器
• 选择器：选择器OR未定义

.hoverIntent( handlerIn, handlerOut, selector )
.hoverIntent( handlerInOut, selector )

4.使用基本配置对象激活插件。

.hoverIntent({

  // 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. 
  interval: 100,

  // 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. Note that hoverIntent r7 and earlier perform this comparison using rectilinear distance, whereas more recent versions compare against Euclidean (straight-line) distance for better accuracy and intuition. 
  // If you are upgrading from an older version, you may want to verify that the desired behavior is preserved. 
  sensitivity: 6,

  // 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. 
  timeout: 0
  
})

更新日志：

2021-12-14

• v1.10.2：替换已弃用的jQuery.isFunction

2019-10-06

• v1.10.1:通过在尝试访问hoverIntent数据之前检查数据来修复可能的比赛条件

2019-02-26

• v1.10.0版本

2017-09-01

• v1.9.0版本

预览截图

jQuery 悬停意图检测插件 悬停意图