<form action="price.php" method="post">
<table>
<tr>
<td></td>
<td><input type="text" name="goods"></td>
</tr>
<tr>
<td></td>
<td><input type="text" name="price" id="price"></td>
</tr>
<tr><td colspan=2><input type="submit" id="submit" value="submit"></td></tr>
</table>
</form>
input id=price0conform"";""
js
ob = document.getElementById("submit");
function check(){
if(document.getElementById("price").value == 0){
var flag = window.conform(" are your sure price is 0 ?");
if(flag){
return true;
}else{
return false;
}
}
}
ob.addEventListener("click",check);
price.php
<?php
echo "price is " . $_POST["price"];
?>Why is the price input zero and the conform window not popup in the form?