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[英]This JavaScript code is not working. Have I got the syntax wrong or is it something else?
[英]Why I got wrong output in on this Javascript code?
我有3個HTML輸入文本,當我嘗試在付費輸入文本上鍵入時,我只能從100到999得到正確答案,但是當總應付金額達到1000+時,它將輸出錯誤。
例:
應付金額: 500 (高於1000的輸出錯誤)
已付: 600 <-當我輸入600時,只要應付金額從0到999,它都有正確的輸出值可以更改。
更改: 100 <-正確。
..但當應付金額高於999時,其輸出錯誤。
例:
應付金額: 1100
付費: 1200
更改: 1199 <-現在我得到了錯誤的輸出。 因為應付金額超過1000。
這是我的腳本:
$("#payable_form input").each(function(){
$(this).keyup(function(){
var payable_amount;
var paid;
payable_amount = parseFloat( $('#payable_amount').val() );
paid = parseFloat( $('#paid').val() );
payable_amount = $.isNumeric( payable_amount ) ? payable_amount : 0;
paid = $.isNumeric(paid) ? paid : 0;
var change = paid - payable_amount;
$('#change').val(change.toFixed(2));
});
});
完整代碼:
<form class="form-horizontal" action="salestranslog.php" id="payable_form" method ="POST">
<br />
<div class="form-group">
<label class="control-label col-xs-4">Customers:</label>
<div class="col-xs-6">
<?php
$result = mysqli_query($connection, "SELECT * FROM customers");
echo "<select class='form-control' name='customer'>";
while($row = mysqli_fetch_assoc($result))
{
echo "<option value = '".$row[name]."'>".$row[name]."</option>";
}
echo "</select>";
?>
</div>
</div>
<div class="form-group form-group has-error has-feedback">
<label class="control-label col-xs-4" for="amount">Total Payable Amount:</label>
<div class="col-xs-4">
<input type="text" class="form-control" id="payable_amount" name="payable_amount" value="<?php echo number_format($total_sales,2); ?>"readonly>
<span class="glyphicon glyphicon-info-sign form-control-feedback"></span>
</div>
</div>
<div class="form-group">
<label class="control-label col-xs-4" for="ttl_items">Total Purchase Items:</label>
<label class="control-label col-xs-1" for="total_items"><mark><?php echo $count; ?></mark></label>
</div>
<div class="form-group">
<label class="control-label col-xs-4">Paid by:</label>
<div class="col-xs-6">
<select class="form-control" name="cash">
<option>Cash</option>
<option>Cheque</option>
</select>
</div>
</div>
<div class="form-group form-group-lg">
<label class="control-label col-xs-4" for="paid">Paid:</label>
<div class="col-xs-4">
<input type="text" class="form-control" name="paid" id="paid" placeholder="0.00">
</div>
</div>
<br /><br /><br />
<div class="form-group has-warning has-feedback">
<label class="control-label col-xs-4" for="ttl_items">Return Change:</label>
<div class="col-xs-4">
<input type="text" class="form-control" id="change" name="change" placeholder="0.00" readonly>
<span class="glyphicon glyphicon-send form-control-feedback"></span>
</div>
</div>
<br />
</div>
<script>
$("#payable_form input").each(function(){
$(this).keyup(function(){
var payable_amount;
var paid;
payable_amount = parseFloat($('#payable_amount').val());
paid = parseFloat($('#paid').val());
payable_amount = $.isNumeric(payable_amount)?payable_amount:0;
paid = $.isNumeric(paid)?paid:0;
var change = paid - payable_amount;
$('#change').val(change.toFixed(2));
});
});
</script>
<div class="modal-footer">
<input type="submit" name="submit" value = "Submit" class="btn btn-success">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</div>
</form>
number_format
為數字> = 1000插入逗號
number_format(1100, 2)
打印“ 1,100.00”
運行parseFloat(“ 1,100.00”)將輸出1和1200-1 = 1199。
使用parseFloat應該可以更好地工作:
number_format($total_sales, 2, ".", "");
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