This is my code for a form. I am asking user to input email and password and checking if user is registered or not. If he is registered then I alert success:
<form role="form" class="legacy-form" action="" method="POST" id="myform1">
<div class="col-xs-12 col-sm-6 col-md-6 col-sm-offset-3 col-md-offset-3">
<div class="form-group">
<input type="email" name="email" id="loginemail" class="form-control" placeholder="Email Address" required>
</div>
</div>
<div class="col-xs-12 col-sm-6 col-md-6 col-sm-offset-3 col-md-offset-3">
<div class="form-group">
<input type="password" name="password" id="loginpassword" class="form-control" placeholder="Password" required>
</div>
</div>
<div class="row" style="padding:15px">
<div class="col-xs-6 col-sm-3 col-md-3 col-sm-offset-3 col-md-offset-3">
<div class="form-group">
<input type="submit" value="Log In" class="btn btn-primary" id="loginbtn">
</div>
</div>
<div class="col-xs-6 col-sm-3 col-md-3">
<div class="form-group">
<input type="submit" value="Cancel" class="btn btn-danger" data-dismiss="modal">
</div>
</div>
</div>
</form>
This is the php code wherein the connection is placed in another file 'init.php'
<?php
include('init.php');
if(isset($_POST))
{
$loginemail=$_POST["loginemail"];
$loginpassword=$_POST["loginpassword"];
$sql = "select count(*),fname from users where password='$loginpassword' and email='$loginemail'";
$result=mysqli_query($con,$sql);
if($result) {
$response =array();
while($row=mysqli_fetch_array($result))
{
array_push($response,array("Count"=>$row[0],"name"=>$row[1]));
}
echo json_encode(array("server_response"=>$response));
} else {
echo "error";
}
mysqli_close($con);
}
?>
this is my js file. On printing info in console I get Connection sucess{"server_response":[{"Count":"1","name":"sagar"}]}
$("#loginbtn").click(function(e) {
var loginemail = $("#loginemail").val();
var loginpassword = $("#loginpassword").val();
check_for_user(loginemail, loginpassword);
function check_for_user(loginemail, loginpassword) {
console.log("in check_for_user");
var i = 0;
console.log(i);
i++;
var c = "";
var x = "1";
var user = "";
var formdata = {
loginemail: loginemail,
loginpassword: loginpassword
}
$.ajax({
url: 'getData.php',
type: "POST",
data: formdata,
dataType: 'text',
success: handle_success,
error: handle_error
});
function handle_success(info) {
console.log(info);
var obj = jQuery.parseJSON(info);
console.log(obj);
$(obj.server_response).each(info, function(index, value) {
user = value.name;
c = value.Count;
});
console.log(c);
console.log(user);
if (x == c) {
alert("Welcome");
//document.location='online.html';
} else {
alert("Enter valid username and password");
}
}
function handle_error() {
alert("error");
}
}
});
The flow of the code is like when the #loginbtn
is clicked it posts loginemail and loginpassword on php and then it checks in database whether there is an identical entry in database, if yes it alerts "welcome". I have searched a lot on StackOverflow I found that it says there is error in either parsing JSON or in decoding it.
It looks like you are echoing "Connection success"
in init.php
although we can't see that.
A json response should have no other content in response ... just the json.
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