easyui添加删除tooltip

/**
* 扩展两个方法
*/
$.extend($.fn.datagrid.methods, {
/**
* 开打提示功能
* @param {} jq
* @param {} params 提示消息框的样式
* @return {}
*/
doCellTip: function (jq, params) {
function showTip(data, td, e) {
if ($(td).text() == "")
return;
data.tooltip.text($(td).text()).css({
top: (e.pageY + 10) + 'px',
left: (e.pageX + 20) + 'px',
'z-index': $.fn.window.defaults.zIndex,
display: 'block'
});
};
return jq.each(function () {
var grid = $(this);
var options = $(this).data('datagrid');
if (!options.tooltip) {
var panel = grid.datagrid('getPanel').panel('panel');
var defaultCls = {
'border': '1px solid #333',
'padding': '2px',
'color': '#333',
'background': '#f7f5d1',
'position': 'absolute',
'max-width': '200px',
'border-radius': '4px',
'-moz-border-radius': '4px',
'-webkit-border-radius': '4px',
'display': 'none'
}
var tooltip = $("<div id='celltip'></div>").appendTo('body');
tooltip.css($.extend({}, defaultCls, params.cls));
options.tooltip = tooltip;
panel.find('.datagrid-body').each(function () {
var delegateEle = $(this).find('> div.datagrid-body-inner').length ? $(this).find('> div.datagrid-body-inner')[0] : this;
$(delegateEle).undelegate('td', 'mouseover').undelegate('td', 'mouseout').undelegate('td', 'mousemove').delegate('td', {
'mouseover': function (e) {
if (params.delay) {
if (options.tipDelayTime)
clearTimeout(options.tipDelayTime);
var that = this;
options.tipDelayTime = setTimeout(function () {
showTip(options, that, e);
}, params.delay);
}
else {
showTip(options, this, e);
}

},
'mouseout': function (e) {
if (options.tipDelayTime)
clearTimeout(options.tipDelayTime);
options.tooltip.css({
'display': 'none'
});
},
'mousemove': function (e) {
var that = this;
if (options.tipDelayTime)
clearTimeout(options.tipDelayTime);
//showTip(options, this, e);
options.tipDelayTime = setTimeout(function () {
showTip(options, that, e);
}, params.delay);
}
});
});

}

});
},
/**
* 关闭消息提示功能
*
* @param {}
* jq
* @return {}
*/
cancelCellTip: function (jq) {
return jq.each(function () {
var data = $(this).data('datagrid');
if (data.tooltip) {
data.tooltip.remove();
data.tooltip = null;
var panel = $(this).datagrid('getPanel').panel('panel');
panel.find('.datagrid-body').undelegate('td', 'mouseover').undelegate('td', 'mouseout').undelegate('td', 'mousemove')
}
if (data.tipDelayTime) {
clearTimeout(data.tipDelayTime);
data.tipDelayTime = null;
}
});
}
});