由于某些原因,我的 javascript 表单验证不会遍历表中的每一行。我使用以下代码创建了表: $usr 变量只是另一个进程的结果:
<form name="myForm" action="addAccessories.php" method="post" onsubmit="return validateForm(this);">
<table border="1" id="IT">
<tr>
<th>Barcode<em>*</em></th>
<th>Current stock</th>
</tr>
<?php
for($id=1; $id<=$usr; $id++){
?>
<tr>
<td><input type="hidden" name="id[]" value="<?php echo $id; ?>" />
<input type="text" name="bar_code<?php echo $id; ?>" id="bar_code<?php echo $id; ?>" value="" /></td>
<td><input type="text" name="num_stock<?php echo $id; ?>" value="0" id="num_stock<?php echo $id; ?>"/></td>
<?php
}
?>
<tr>
<td> </td>
<td> <button data-theme="b" input type="submit" name="Submit" value="Submit">Add accessories</button></td>
</tr>
</table>
</form>
该表的行数为:rows = $usr + 1
我的验证表单代码:
<script type="text/javascript">
function validateForm(){
var errors = [];
for(i = 1; i < document.getElementById("IT").rows.length; i++){
var barcode = document.getElementById('bar_code'+i).value;
var des = document.getElementById('description'+i).value;
var num_stock = document.getElementById('num_stock'+i).value;
if(barcode == null || barcode == ""){
errors[errors.length] = "You must enter barcode.";
}
if(isNaN(num_stock)){
errors[errors.length] = "Current stock must be an integer";
}
if(num_stock < 0){
errors[errors.length] = "Current stock must be a positive number";
}
if (errors.length > 0) {
reportErrors(errors);
return false;
}
return true;
}
}
function reportErrors(errors){
var msg = "There were some problems...\n";
for (var i = 0; i<errors.length; i++) {
var numError = i + 1;
msg += "\n" + numError + ". " + errors[i];
}
alert(msg);
}
</script>
此过程仅验证表中的第一行然后停止。谁能告诉我出了什么问题以及如何解决?非常感谢您的帮助