帮忙改一段JS代码

悬赏园豆：10 [已解决问题] 解决于 2016-06-05 11:59

  1 <html>
  2 <head>
  3 </head>
  4 <body>
  5     <script language="javascript">
  6         function addRowToTable() {
  7             var tbl = document.getElementById('tblSample');
  8             var lastRow = tbl.rows.length;
  9             // if there's no header row in the table, then iteration = lastRow + 1
 10             var iteration = lastRow;
 11             var row = tbl.insertRow(lastRow);//添加行
 12             // left cell
 13             var cellLeft = row.insertCell(0); //添加列
 14             var textNode = document.createTextNode(iteration);
 15             cellLeft.appendChild(textNode);
 16             // right cell
 17             var cellRight = row.insertCell(1);
 18             var el = document.createElement('input');
 19             el.type = 'text';
 20             el.name = 'txtRow' + iteration;
 21             el.id = 'txtRow' + iteration;
 22             el.size = 40;
 23             el.onkeypress = keyPressTest;
 24             cellRight.appendChild(el);
 25             // select cell
 26             var cellRightSel = row.insertCell(2);
 27             var sel = document.createElement('select');
 28             sel.name = 'selRow' + iteration;
 29             sel.options[0] = new Option('text zero', 'value0');
 30             sel.options[1] = new Option('text one', 'value1');
 31             cellRightSel.appendChild(sel);
 32         }
 33         function keyPressTest(e, obj) {
 34             var validateChkb = document.getElementById('chkValidateOnKeyPress');
 35             if (validateChkb.checked) {
 36                 var displayObj = document.getElementById('spanOutput');
 37                 var key;
 38                 if (window.event) {
 39                     key = window.event.keyCode;
 40                 } else if (e.which) {
 41                     key = e.which;
 42                 }
 43                 var objId;
 44                 if (obj != null) {
 45                     objId = obj.id;
 46                 } else {
 47                     objId = this.id;
 48                 }
 49                 displayObj.innerHTML = objId + ' : ' + String.fromCharCode(key);
 50             }
 51         }
 52         function removeRowFromTable() {
 53             var tbl = document.getElementById('tblSample');
 54             var lastRow = tbl.rows.length;
 55             if (lastRow > 2)
 56                 tbl.deleteRow(lastRow - 1);
 57         }
 58         function openInNewWindow(frm) {
 59             // open a blank window
 60             var aWindow = window
 61                     .open('', 'TableAddRowNewWindow',
 62                             'scrollbars=yes,menubar=yes,resizable=yes,toolbar=no,width=400,height=400');
 63             // set the target to the blank window
 64             frm.target = 'TableAddRowNewWindow';
 65             // submit
 66             frm.submit();
 67         }
 68         function validateRow(frm) {
 69             var chkb = document.getElementById('chkValidate');
 70             if (chkb.checked) {
 71                 var tbl = document.getElementById('tblSample');
 72                 var lastRow = tbl.rows.length - 1;
 73                 var i;
 74                 for (i = 1; i <= lastRow; i++) {
 75                     var aRow = document.getElementById('txtRow' + i);
 76                     if (aRow.value.length <= 0) {
 77                         alert('Row ' + i + ' is empty');
 78                         return;
 79                     }
 80                 }
 81             }
 82             openInNewWindow(frm);
 83         }
 84     </script>
 85     <form method="get" action="">
 86         <p>
 87             <input type="button" value="添加" onclick="addRowToTable();" /> 
 88             <input type="button" value="删除" onclick="removeRowFromTable();" /> 
 89             <input type="button" value="提交" onclick="validateRow(this.form);" /> 
 90             <input type="checkbox" id="chkValidate" /> Validate Submit
 91         </p>
 92         <table border="1" id="tblSample">
 93             <tr>
 94                 <th colspan="3">添加选项</th>
 95             </tr>
 96             <tr>
 97                 <td>1</td>
 98                 <td><input type="text" name="txtRow1" id="txtRow1" size="40" /></td>
 99                 <td>
100                 <select name="selRow0">
101                         <option value="value0">text zero</option>
102                         <option value="value1">text one</option>
103                 </select></td>
104             </tr>
105         </table>
106 </body>
107 </html>

改成可以增加试题的表单，第一行题干，第二行ABCD选项，第三行正确答案；对这块不是很明白，又比较急只能求各位大神帮忙了，谢谢了

js html javascript

小豫 | 初学一级 | 园豆：170
提问于：2016-05-21 12:51

< >

最佳答案

大概就是这个样子具体的css样式懒得调了自己该把

<html>
<head>
</head>
<body>
<script language="javascript">
function addRowToTable() {
var tbl = document.getElementById('tblSample');

var lastRow2 = tbl.rows.length;
var iteration2 = lastRow2;
var row2 = tbl.insertRow(lastRow2);//添加行2
var cellLeft2 = row2.insertCell(0); //添加列
var textNode2 = document.createTextNode(iteration2);
cellLeft2.appendChild(textNode2);

var cellRight2 = row2.insertCell(1);
var el2 = document.createElement('input');
el2.type = 'text';
el2.name = 'txtRow' + iteration2;
el2.id = 'txtRow' + iteration2;
el2.size = 40;
el2.value ='提干';
el2.onkeypress = keyPressTest;
cellRight2.appendChild(el2);

var lastRow = tbl.rows.length;
// if there's no header row in the table, then iteration = lastRow + 1
var iteration = lastRow;
var row = tbl.insertRow(lastRow);//添加行
// left cell
var cellLeft = row.insertCell(0); //添加列

// right cell
var cellRight = row.insertCell(1);
var el = document.createElement('input');
el.type = 'text';
el.name = 'txtRow' + iteration;
el.id = 'txtRow' + iteration;
el.size = 40;
el.value ='A B C D';
el.onkeypress = keyPressTest;
cellRight.appendChild(el);

var lastRow3= tbl.rows.length;
var iteration3 = lastRow3;
var row3 = tbl.insertRow(lastRow3);//添加行3
var cellLeft3 = row3.insertCell(0); //添加列

var cellRight3 = row3.insertCell(1);
var el3 = document.createElement('input');
el3.type = 'text';
el3.name = 'txtRow' + iteration3;
el3.id = 'txtRow' + iteration3;
el3.size = 40;
el3.value ='答案';
el3.onkeypress = keyPressTest;
cellRight3.appendChild(el3);

}
function keyPressTest(e, obj) {
var validateChkb = document.getElementById('chkValidateOnKeyPress');
if (validateChkb.checked) {
var displayObj = document.getElementById('spanOutput');
var key;
if (window.event) {
key = window.event.keyCode;
} else if (e.which) {
key = e.which;
}
var objId;
if (obj != null) {
objId = obj.id;
} else {
objId = this.id;
}
displayObj.innerHTML = objId + ' : ' + String.fromCharCode(key);
}
}
function removeRowFromTable() {
var tbl = document.getElementById('tblSample');
var lastRow = tbl.rows.length;
if (lastRow > 2)
tbl.deleteRow(lastRow - 1);
}
function openInNewWindow(frm) {
// open a blank window
var aWindow = window
.open('', 'TableAddRowNewWindow',
'scrollbars=yes,menubar=yes,resizable=yes,toolbar=no,width=400,height=400');
// set the target to the blank window
frm.target = 'TableAddRowNewWindow';
// submit
frm.submit();
}
function validateRow(frm) {
var chkb = document.getElementById('chkValidate');
if (chkb.checked) {
var tbl = document.getElementById('tblSample');
var lastRow = tbl.rows.length - 1;
var i;
for (i = 1; i <= lastRow; i++) {
var aRow = document.getElementById('txtRow' + i);
if (aRow.value.length <= 0) {
alert('Row ' + i + ' is empty');
return;
}
}
}
openInNewWindow(frm);
}
</script>
<form method="get" action="">
<p>
<input type="button" value="添加" onclick="addRowToTable();" />
<input type="button" value="删除" onclick="removeRowFromTable();" />
<input type="button" value="提交" onclick="validateRow(this.form);" />
<input type="checkbox" id="chkValidate" /> Validate Submit
</p>
<table border="1" id="tblSample">
<tr>
<th colspan="3">添加选项</th>
</tr>
<tr>
<td >1</td>
<td >提干</td>
<td ></td>
</tr>
<tr>
<td></td>
<td><input type="text" name="txtRow1" id="txtRow1" size="40" value="A B C D"/></td>
<td>
</td>

</tr>
<tr>
<td>

</td>
<td>

</td>
<td>

</td>
</tr>

</table>
</body>
</html>

收获园豆：10

黑猫的黑猫黑猫 | 菜鸟二级 |园豆：325 | 2016-05-24 12:01

清除回答草稿

您需要登录以后才能回答，未注册用户请先注册。

欢迎，请先 登录 或者 注册 。

帮忙改一段JS代码

欢迎，请先登录或者注册。