复选框全选 和取消全选控制复选框 并且将选中的checkbox高亮行显示-Check box Select and Unselect All Control check box and select the checkbox highlighted line shows

日常网页中javascr ipt代码，针对单选、多选、下拉的通用取值方法。-about the web page,include radiobox,checkbox,select,the method is common