OnBeforeUnload if qty inputs are differents of 0
I have html table like this :
<table border="1">
<tr>
<td>Prod name </td>
<td>Qty</td>
<td>Add to cart </td>
</tr>
<tr>
<td>product 1 </td>
<td><input name="super_group[961]" type="text" class="input-text qty" title="Qty" value="0" size="5" max开发者_高级运维length="12"></td>
<td><input type="submit" name="Submit" value="Envoyer" /></td>
</tr>
<tr>
<td>product 2 </td>
<td><input name="super_group[962]" type="text" class="input-text qty" title="Qty" value="0" size="5" maxlength="12"></td>
<td><input type="submit" name="Submit2" value="Envoyer" /></td>
</tr>
</table>
and I want to avoid that user quit the page when there is a quantity typed in the qty input fields.
(I have to show a message only if a quantity field is not 0).
With jQuery you could:
$(window).bind('beforeunload', function(e) {
var prompt = false;
$('input.qty').each(function(i, input) {
if ($(input).val() != '0') {
prompt = true;
}
});
if (prompt) {
return e.returnValue = 'Some warning message';
}
});
However https://developer.mozilla.org/en/DOM/window.onbeforeunload
Note that in Firefox 4 and later the returned string is not displayed to the user. See Bug 588292.
Added AJAX when non-zero - NOT tested
<html>
<head>
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.2/jquery.min.js"></script>
<script type="text/javascript">
$(window).bind('beforeunload', function(e) { // thanks @Ghostoy for the jquery version of this
var nonzero = false;
$(".qty").each(function() { // selector assuming input with class qty
if (this.value>0) {
nonzero=true;
return false; // leave the each
}
});
if (nonzero) return "You have unsaved changes";
});
$("input[id^='sg_']").each(function() {
$(this).bind("keyup", function() {
var disabled = isEmpty(this.value);
$("#bt_"+this.id.split("_")[1]).attr("disabled",disabled);
});
});
$("input[id^='bt_']").each(function() {
var itemId=this.id.split("_")[1]
var val = $("#sg_"+itemId).val()
$(this).attr("disabled",isEmpty(val);
$(this).click(function() {
$.get("add_to_cart.php?item="+itemId+"&qty="+$("#sg_"+itemId).val();
});
});
function isEmpty(val) {
return isNaN(val() || val=="" || val==null;
}
</script>
</head>
<body>
<form action="">
<table border="1">
<tr>
<td>Prod name </td>
<td>Qty</td>
<td>Add to cart </td>
</tr>
<tr>
<td>product 1 </td>
<td><input name="super_group[961]" id="sg_961" type="text" class="input-text qty" title="Qty" value="0" size="5" maxlength="12"></td>
<td><input type="button" id="bt_961" value="Envoyer" /></td>
</tr>
<tr>
<td>product 2 </td>
<td><input name="super_group[962]" id="sg_962" type="text" class="input-text qty" title="Qty" value="0" size="5" maxlength="12"></td>
<td><input type="button" id="bt_962" value="Envoyer" /></td>
</tr>
</table>
</form>
</body>
</html>
加载中,请稍侯......
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