EasyUI的doCellTip实现鼠标放到单元格上提示单元格

//扩展
$.extend($.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({ 
 : (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' : '1px', 
'color' : '#333', 
'background' : '#f7f5d1', 
'position' : 'absolute', 
'max-width' : '200px', 
'border-radius' : '4px', 
'-moz-border-radius' : '4px', 
'-webkit-border-radius' : '4px', 
'display' : 'none' 
} 
var tooltip = $("<div></div>").appendTo('body'); 
tooltip.css($.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); 
options.tipDelayTime = setTimeout( 
function() { 
showTip(options, that, e); 
}, params.delay); 
} else { 
showTip(options, that, e); 
} 
} 
}); 
}); 
} 
}); 
}, 
/ 
 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; 
} 
}); 
} 
});

function doCellTip(){ 
$('#dg').datagrid('doCellTip',{'max-width':'100px'}); 
} 
function cancelCellTip(){ 
$('#dg').datagrid('cancelCellTip'); 
}

onLoadSuess:function(data){ 
$('#dg').datagrid('doCellTip',{cls:{'background-color':'red'},delay:1000}); 
}