我有这个jQuery AJAX代码,进入Mysql表单php。它无需重新加载页面即可运行。问题是当用户在表单中输入内容时,然后单击提交,我想使用php和ajax(使用jquery)。但它不会在alert()中打印字符串。有人可以告诉我这是如何实现的吗?
HTML:
<form id="students" method="post">
<div class="row">
<input name="a[]" value="" type="text" >
<input name="b[]" value="" type="text" >
</div>
<div class="row">
<input name="a[]" value="" type="text" >
<input name="b[]" value="" type="text" >
</div>
<input type="submit" value="submit" id="submitbutton" class="insert"/>
</form>
<script type="text/javascript">
$('#students').submit(function(){
event.preventDefault();
$.ajax({
type: 'POST',
url: 'ajax_insert.php',
data: $('#students').serialize(),
dataType: 'JSON',
success: function(data) {
alert('form has been posted successfully');
}
});
});
</script>
和ajax_insert.php:
$a1=$_POST['a'];
$b1=$_POST['b'];
//$query_values = array();
$index=0;
foreach($a1 as $s){
$sql = "INSERT INTO test_data(a,b) VALUES('$s','".$b1[$index]."')";
$result = mysql_query($sql);
if($result)
{
echo "1";
}
$index++;
}
答案 0 :(得分:1)
$('#students').submit(function(event){
event.preventDefault();
$.ajax({
type: 'POST',
url: 'ajax_insert.php',
data: $('#students').serialize(),
dataType: 'JSON',
success: function(data) {
alert('form has been posted successfully');
}
});
查看官方文档here并了解如何使用event.preventDefault();
答案 1 :(得分:0)
您可能必须在提交事件回调中event.preventDefault();
:
$('#students').submit(function(){
event.preventDefault();
$.ajax({
type: 'POST',
url: 'ajax_insert.php',
data: $('#students').serialize(),
dataType: 'JSON',
success: function(data) {
alert('form has been posted successfully');
}
});
});
答案 2 :(得分:0)
使用dataType时需要返回有效的json:&#34; json&#34;在$ .ajax调用
或者您可以使用dataType:&#34; html&#34;没有重写PHP代码
更新(代码示例,应该有效):
HTML中的:
<script type="text/javascript">
$('#students').submit(function(e){
e.preventDefault();
$.ajax({
type: 'POST',
url: 'ajax_insert.php',
data: $('#students').serialize(),
dataType: 'JSON',
success: function(data) {
if(data.result == 1) {
alert('form has been posted successfully');
} else {
alert(data.error);
}
}
});
});
</script>
ajax_insert.php
$a1=$_POST['a'];
$b1=$_POST['b'];
//$query_values = array();
$index=0;
$errors = array();
foreach($a1 as $s){
$sql = "INSERT INTO test_data(a,b) VALUES('$s','".$b1[$index]."')";
$result = mysql_query($sql);
if(!$result)
{
$errors[] = "\"$sql\"";
}
$index++;
}
if(!empty($errors)) {
echo json_encode(array('result'=>0,'error'=>"Error executing following queries: \n".implode("\n", $errors)));
} else {
echo json_encode(array('result'=>1));
}