Monthly Archives: August 2009

ASTreeView 1.0 Released

After a long time development, the ASTreeView is finally finished. Now I would like to introduce it to you.  And your feedback is appreciated! ASTreeView is a powerful treeview with drag drop, ajax loading, context menu, xml import/export, checkbox, selection, add/editing/deleting nodes with ajax. ASTreeView is developed on .NET framework 2.0. Demo project is a… Read More »

正确设置绝对定位的dom元素的位置

先前在做ASTreeView右键菜单时遇到一个问题,是这样的: 因为页面的布局中,放置ASTreeView控件的容器叫container,当用户右键点击树节点时,edit, delete节点的菜单出现。由于container的position是relative的,右键菜单的div的position是absolute的,所以,设置菜单div的left, top属性时,会根据container的位置去定位,如图所示:   当用户点击右键,我们可以获取当前鼠标的坐标,这时,如果直接将鼠标的x,y坐标赋值给菜单的left和top就会出问题。因为鼠标坐标的原点是窗口的左上角,而菜单的原点是container的左上角。 那如何让菜单显示在鼠标点击的位置呢?接下来的代码将一步一步地实现: 首先是获取鼠标坐标的代码: function getMousePos(e) { e = e || event; var posx = 0; var posy = 0; if ( e.pageX && e.pageY ) { posx = e.pageX; posy = e.pageY; } else if (e.clientX && e.clientY ) { posx = e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft; posy = e.clientY… Read More »