jQuery+JavaScript로 table 증가 및 감소

2058 단어
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery+JavaScript   table  </title>
<script language="javascript" src="jquery-1.7.1.min.js"></script>
</head>
<body>
	<table border="0" width="800" style="border-collapse:collapse;" id="tb1">
    	<tr>
        	<td><input type="file" name="pic[]" /></td>
        </tr>
    </table>
    <input type="button" id="add" value="+" /> <input type="button" id="minus" value="-" /> <input type="button" id="empty" value=" " />
	<script type="text/javascript">
    	$("#add").click(function(){
			$("#tb1").append('<tr><td><input type="file" name="pic[]" /></td></tr>');
		})
		$("#minus").click(function(){
			var tbl_rows = Math.round((document.getElementById('tb1').rows.length));
			if(tbl_rows>1) dealTableRows('tb1', 0, 1);
		})
		$("#empty").click(function(){
			$("#tb1").empty();
		})
		function dealTableRows(tbl_id, opt, cellnum, str){
			var tblObj = document.getElementById(tbl_id);
			var newRow,newCell;
			switch(opt){
				case 1:/*   */
					newRow = tblObj.insertRow(tblObj.rows.length);
					for(var i=0; i<cellnum; i++){
						newCell = newRow.insertCell(newRow.cells.length);
						newCell.innerHTML = str[i];
					}
					break ;
				default :
					for(var j=0;j<cellnum;j++){
						tblObj.deleteRow(tblObj.rows.length-1);    
					}            
					break ;
			}
		}
    </script>
</body>
</html>

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