jQuery使用EasyUi实现三级联动下拉框效果

// 一层Combo

varsrmCombx = $("#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

varpiperowCombx = $("#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

varpipeCombx=$("#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

});