//表格数据转json数据
function dao() {
	alert("test");
	var JsonData = {
			pid:"",cid:"",name:"",time:"",state:""
		}
		var aa = [];
			var rows = document.getElementById("tab").rows.length;
			//获得行数(包括thead)
		    var colums = document.getElementById("tab").rows[0].cells.length;
			//获得列数
		    for (var i = 1;i < rows;i++) {
			var JsonData = new Object();
			JsonData.pid = document.getElementById("tab").rows[i].cells[0].innerHTML;
			JsonData.cid = document.getElementById("tab").rows[i].cells[1].innerHTML;
			JsonData.name = document.getElementById("tab").rows[i].cells[2].innerHTML;
			JsonData.time = document.getElementById("tab").rows[i].cells[3].innerHTML;
			JsonData.state = document.getElementById("tab").rows[i].cells[4].innerHTML;
			aa.push(JsonData);
		    }
		var obj = JSON.stringify(aa);
		console.log(obj);
		
		$(".jg").html(obj);
		

}