我对这个javascript有3个问题。
- 如果已经限制，则用户无法添加更多项目。
- 示例最大项目 3，值项目是 ab，bc，cd，如果使用 javascript，我如何获取值（在所有完成后用户将按提交，然后表中的所有数据都将发布（我无法从 javascript 中获取数据））？
-
我想要构建的是这样的：示例 2 项
|总项目 |名称项 |删除 |
| 1 | 美国广播公司 |删除（按钮） |
| 2 | CDE |删除（按钮） |
这是 html 代码，示例最大项目为 6
<table border="0">
<tr>
<td>
Title
</td>
<td>
:
</td>
<td>
<input type="text" name="title" value="" placeholder="Input Title">
</td>
</tr>
<tr>
<td>
Show Item
</td>
<td>
:
</td>
<td>
<select name="max" id="maxitem">
<?php
for($i=1; $i<=6; $i++)
{
echo "<option value=".$i.">".$i." Item</option>";
}
?>
</select>
</td>
</tr>
<tr>
<td>
Product
</td>
<td>
:
</td>
<td>
<input type="text" name="product" id="product" value="" placeholder="Add Product">
</td>
<td>
<input type="button" id="ADD" value="Add Item">
</td>
</tr>
</table>
<table border="1" id="tblname">
<thead>
<tr>
<td>
Total Item
</td>
<td>
Name Item
</td>
<td>
DELETE
</td>
<tr>
</thead>
<tbody>
<tr>
<td>
</td>
</tr>
</tbody>
</table>
<input type="submit" value="SUBMIT">
这是JavaScript代码：
$(document).ready(function(){
var item = 1;
$('#ADD').click(function(){
var maxitem = parseInt($("#maxitem").val()); //from max item in html
if($('#product').val()){ // check input product
if( item <= maxitem )
{
$('#tblname tbody').append($("#tblname tbody tr:last").clone());
$('#tblname tbody tr:last td:first').val(item);
$('#tblname tbody tr:last td:first').html($('#product').val());
$('#tblname tbody tr:last td:first').append("<input type='button' class='DEL' value='DELETE'>");
var item +=1;
}
else
{
alert ("Max Limit !!!");
}
}else{alert('Enter Text');}
});
// for delete row
$('body').on('click', 'input.DEL', function() {
$(this).parents('tr').remove();
});
});
<html>
<head>
<script src="http://code.jquery.com/jquery-1.10.2.js"></script>
<script>
$(document).ready(function(){
var item = 1;
$('#ADD').click(function(){
var maxitem = parseInt($("#maxitem").val(), 10); //from max item in html
var iCount = 0;
if($('#product').val()){ // check input product
if( item <= maxitem )
{
iCount = $('#tblname tbody tr').length + 1;
szTr = "<tr><td>";
szTr = szTr + iCount + "</td>";
szTr = szTr + "<td>" +$('#product').val() +"</td>";
szTr = szTr + "<td><input type='button' class='DEL' value='DELETE'></td>";
szTr = szTr + "</tr>";
$('#tblname tbody').append(szTr);
item = item+1;
}
else
{
alert ("Max Limit !!!");
}
}else{alert('Enter Text');}
});
// for delete row
$('body').on('click', 'input.DEL', function() {
$(this).parents('tr').remove();
});
$('#get_data').click(function () {
$('#tblname tbody tr').each(function () {
alert($(this).find('td:eq(1)').text());
});
});
});
</script>
</head>
<body>
<table border="0">
<tr>
<td>
Title
</td>
<td>
:
</td>
<td>
<input type="text" name="title" value="" placeholder="Input Title">
</td>
</tr>
<tr>
<td>
Show Item
</td>
<td>
:
</td>
<td>
<select name="max" id="maxitem">
<option value="1">Item1</option>
<option value="2">Item2</option>
<option value="3">Item3</option>
<option value="4">Item4</option>
<option value="5">Item5</option>
<option value="6">Item6</option>
</select>
</td>
</tr>
<tr>
<td>
Product
</td>
<td>
:
</td>
<td>
<input type="text" name="product" id="product" value="" placeholder="Add Product">
</td>
<td>
<input type="button" id="ADD" value="Add Item">
</td>
</tr>
</table>
<table border="1" id="tblname">
<thead>
<tr>
<td>
Total Item
</td>
<td>
Name Item
</td>
<td>
DELETE
</td>
<tr>
</thead>
<tbody>
</tbody>
</table>
<input type="button" value="Get Data" id="get_data">
<input type="submit" value="SUBMIT">
</body>
</html>
看看这是否是你想做的，你的描述很难破译：
演示：https://jsfiddle.net/d8kpsnxx/
<table border="0">
<tr>
<td>Title</td>
<td>:</td>
<td><input type="text" name="title" value="" placeholder="Input Title"></td>
</tr>
<tr>
<td>Show Item</td>
<td>:</td>
<td>
<select name="max" id="maxitem">
<option value=1>1 Item</option>
<option value=2>2 Item</option>
<option value=3>3 Item</option>
<option value=4>4 Item</option>
<option value=5>5 Item</option>
<option value=6>6 Item</option>
</select>
</td>
</tr>
<tr>
<td>Product</td>
<td>:</td>
<td><input type="text" name="product" id="product" value="" placeholder="Add Product"></td>
<td><input type="button" id="ADD" value="Add Item"></td>
</tr>
</table>
<table border="1" id="tblname">
<thead>
<tr>
<td>
Total Item
</td>
<td>
Name Item
</td>
<td>
DELETE
</td>
<tr>
</thead>
<tbody id="cracker">
</tbody>
</table>
<input id="submitall" type="submit" value="SUBMIT">
<script>
$(document).ready(function() {
var isAllowed = 3;
var isSet = 0;
$(this).on('click',"#ADD",function(e) {
// Prevent submission
e.preventDefault();
// Set all the value object
var drop = $("select[name=max]");
var title = $("input[name=title]");
var prod = $("input[name=product]");
// Append the table
$("#cracker").append('<tr><td>'+title.val()+': '+prod.val()+'</td><td>'+drop.val()+'</td><td><input type="submit" class="dMade" name="'+drop.val()+'" value="DELETE" /></td></tr>');
// Clear all the values to start over
drop.val("");
title.val("");
prod.val("");
// Auto increment
isSet++;
// Turn off/on submit buttons
restFormOpts();
});
$(this).on('click',".dMade",function(e) {
var traversed = $(this).parents("tr");
traversed.remove();
isSet--;
restFormOpts();
});
function restFormOpts()
{
if(isSet === isAllowed) {
$("#ADD").attr("disabled",true);
$("#submitall").attr("disabled",false);
}
else {
$("#ADD").attr("disabled",false);
$("#submitall").attr("disabled",true);
}
}
});
</script>