jQuery使用EasyUi实现三级联动下拉框效果

其它的都不说，使用easyui实现三级联动主要就是一层套一层，大家且看代码

html表单

<input id="txtPipeRowName" style="width:150px;">
<input id="txtPipeName" style="width:150px;">

easyUi的Combobox:

// 一层Combo
var srmCombx = $("#txtShouName")combobox({
loader:function(param,success,error){
  $ajax({
url: '${CTX_ROOT}/TEquipmentsController?method=getEquipmentByParId&id='+selectSgId+'',
dataType: 'json',
success: function(data){
dataunshift({equipmentid:'',equipmentname:'全部'});
success(data);
},
        error: function(){
errorapply(this, arguments);
}
});
  },
  onSelect:function(record){ //onSelect 用户点击时触发的事件 在此的意义在于，用户点击一级后自动二级combobox
  piperowCombxcombobox({
loader:function(param,success,error){
  $ajax({
url: '${CTX_ROOT}/TEquipmentsController?method=getEquipmentByParId&id='+$("#txtShouName")combobox("getValue")+'',
dataType: 'json',
success: function(data){
dataunshift({equipmentid:'',equipmentname:'全部'});
success(data);
},
        error: function(){
errorapply(this, arguments);
}
});
  },
  onSelect:function(record){ //这里也使用了onSelect事件，在二级combobox被用户点击时触发三级combobox
  pipeCombxcombobox({
loader:function(param,success,error){
  $ajax({
url: '${CTX_ROOT}/TEquipmentsController?method=getEquipmentByParId&id='+$("#txtPipeRowName")combobox("getValue")+'',
dataType: 'json',
success: function(data){
dataunshift({equipmentid:'',equipmentname:'全部'});
success(data);
},
        error: function(){
errorapply(this, arguments);
}
});
  },
  valueField: 'equipmentid',
  textField: 'equipmentname',
  value:'',
  editable:false
});
  },
  onLoadSuccess:function(){ //清空三级下拉框 就是成功加载完触发的事件 当一级combobox改变时，二级和三级就需要清空
  pipeCombxcombobox("clear");
  pipeCombxcombobox('setValue', '全部'); //给combobox下拉框设置一个值，否则为空不好看
  },
  valueField: 'equipmentid',
  textField: 'equipmentname',
  value:'',
  editable:false
})combobox("clear"); //清空二级下拉框 

  },
  valueField: 'equipmentid',
  textField: 'equipmentname',
  value:'',
  editable:false
});
/*******************************/
//下面的俩个是组件， 

// 二层Combo
var piperowCombx = $("#txtPipeRowName")combobox({
loader:function(param,success,error){
  $ajax({
url: '${CTX_ROOT}/TEquipmentsController?method=getEquipmentByParId&id='+$("#txtShouName")combobox("getValue")+'',
dataType: 'json',
success: function(data){
dataunshift({equipmentid:'',equipmentname:'全部'});
success(data);
},
        error: function(){
errorapply(this, arguments);
}
});
  },
  valueField: 'equipmentid',
  textField: 'equipmentname',
  value:'',
  editable:false
}); 

//三层Combo
var pipeCombx=$("#txtPipeName")combobox({
loader:function(param,success,error){
  $ajax({
url: '${CTX_ROOT}/TEquipmentsController?method=getEquipmentByParId&id='+$("#txtPipeRowName")combobox("getValue")+'',
dataType: 'json',
success: function(data){
dataunshift({equipmentid:'',equipmentname:'全部'});
success(data);
},
        error: function(){
errorapply(this, arguments);
}
});
  },
  valueField: 'equipmentid',
  textField: 'equipmentname',
  value:'',
  editable:false
});

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