ExtJs 实现 NumberField 即时计算

Posted 周五, 10/26/2012 - 22:43 by admin

例如有三列NumberField，分别是：开始量结束量差。实现输入完开始量和结束量，即时自动计算差并填充。

在Ext.form.NumberField加入listeners，选用的事件为“change”

var paramStart = new Ext.form.NumberField({
            id:"paramStart",
          fieldLabel: "开始读数",
          allowBlank: false,
          width: 180,
          tabIndex: 3,
          blankText: "不能为空"
      });
    var paramEnd = new Ext.form.NumberField({
        id:"paramEnd",
        fieldLabel: "终止读数",
        allowBlank: false,
        width: 180,
        tabIndex: 4,
        blankText: "不能为空",
        listeners:{ 
                      change:function() 
                      { 
                                            if( Ext.getCmp('paramEnd').getValue!=""&&Ext.getCmp('paramEnd').getValue()!="0"){
 
                          Ext.getCmp('shishou').setValue(Ext.getCmp('paramEnd').getValue()-Ext.getCmp('paramStart').getValue());//即时计算并填充                      } 
                      } 
}
 
 
    });
     var shishu = new Ext.form.NumberField({
        id:"shishou",
        fieldLabel: "收费量",
        allowBlank: false,
        width: 180,
        tabIndex: 4,
        blankText: "不能为空"
      
 
 
    });