dynamic creation of controls
i want create a screen for entering Sales Order details.
i want to fasten the process as fast as possible
So i开发者_如何学JAVA have a table with two text boxes
Product name Qty +
So if i click on + i want to create new text boxes under Product name and Qty. The number of items may be 50 or more.
How can i do this?
You can use jQuery. Something like
$('.plus').click(function() {
$(this).append('<input type="text">');
})
Here's an example which uses cloning of an initial row. Try it live with jsFiddle.
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<title>Add Input Rows</title>
<script type="text/javascript">
function addEvent(el, name, handler)
{
if (typeof window.addEventListener != "undefined")
{
el.addEventListener(name, handler, false);
}
else
{
el.attachEvent("on" + name, handler);
}
};
addEvent(window, "load",function()
{
var productRows = document.getElementById("productRows");
var clonedRow = productRows.getElementsByTagName("tr")[0].cloneNode(true);
addEvent(document.getElementById("addProductRow"), "click", function()
{
productRows.appendChild(clonedRow.cloneNode(true));
});
});
</script>
</head>
<body>
<table>
<thead>
<tr>
<th>Product name</th>
<th>Qty</th>
<th><input type="button" id="addProductRow" value="+"></th>
</tr>
</thead>
<tbody id="productRows">
<tr>
<td><input type="text" name="name"></td>
<td><input type="text" name="qty"></td>
</tr>
</tbody>
</table>
</body>
</html>
If you wanted to go on and add the ability to remove dynamically added rows, you could do something like this (jsFiddle):
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<title>Add & Remove Input Rows</title>
<script type="text/javascript">
function addEvent(el, name, handler)
{
if (typeof window.addEventListener != "undefined")
{
el.addEventListener(name, handler, false);
}
else
{
el.attachEvent("on" + name, handler);
}
}
addEvent(window, "load", function()
{
var productRows = document.getElementById("productRows"),
templateRow = (function() {
var clonedRow = productRows.getElementsByTagName("tr")[0].cloneNode(true),
removeButton = document.createElement("input");
removeButton.type = "button";
removeButton.value = "-";
removeButton.title = "Click to remove this row";
clonedRow.getElementsByTagName("td")[2].appendChild(removeButton);
return clonedRow;
})();
addEvent(document.getElementById("addProductRow"), "click", function()
{
var row = templateRow.cloneNode(true),
removeButton = row.getElementsByTagName("td")[2].getElementsByTagName("input")[0];
addEvent(removeButton, "click", function()
{
productRows.removeChild(row);
});
productRows.appendChild(row);
});
});
</script>
<style>
th.buttons input, td.buttons input { width: 100%; }
</style>
</head>
<body>
<table>
<thead>
<tr>
<th>Product name</th>
<th>Qty</th>
<th class="buttons"><input type="button" id="addProductRow" title="Click to add a new row" value="+"></th>
</tr>
</thead>
<tbody id="productRows">
<tr>
<td><input type="text" name="name"></td>
<td><input type="text" name="qty"></td>
<td class="buttons"></td>
</tr>
</tbody>
</table>
</body>
</html>
If you want to pester your users with annoying popups if they try to delete populated rows, swap in this bit (jsFiddle):
addEvent(removeButton, "click", function()
{
var inputs = row.getElementsByTagName("input"),
confirmRemove = false;
for (var i = 0, input; input = inputs[i]; i++)
{
if (input.type == "text" && input.value !== "")
{
confirmRemove = true;
break;
}
}
if (!confirmRemove ||
confirm("This row contains data. Are you sure you want to remove it?"))
{
productRows.removeChild(row);
}
});
加载中,请稍侯......
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