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我正在嘗試使用CI和Ajax製作一些計算程序。 計算結果是成功的，但是，當我想用if條件的變量顯示結果時，該變量不會顯示，但結果正在工作。所以我對這個很困惑，而且已經處於邊緣。 如果有任何可用的參考，請告訴我。抱歉我的英文不好。用Ajax顯示結果
這裏的控制器：
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Kalkulator extends CI_Controller{
public function __construct(){
parent::__construct();
}
public function index(){
$hasil ['hasil']= 0;
$hasil ['laba'] = '';
$this->load->view('Hitungan', $hasil);
}
public function hitung()
{
$v1 = $this->input->post('v1');
$v2 = $this->input->post('v2');
$v3 = $this->input->post('v3');
$v4 = $this->input->post('v4');
$v5 = $this->input->post('v5');
$v6 = $this->input->post('v6');
$v1 = $v1;
$v2 = $v2;
$v3 = $v3;
$v4 = $v4;
$v5 = $v5;
$v6 = $v6;
$laba = '';
$hasil = 0;
$hasil = ((($v2*$v3*$v4)+($v1*$v5))/$v6);
$nilai['hasil'] = round($hasil*50)."%" .$laba;
echo json_encode($nilai);
if ($nilai['hasil'] < 30) {
$laba = "Budidaya Anda akan gagal";
}
}
}
腳本：
<script type="text/javascript">
$(document).ready(function() {
$(".submit").click(function(event) {
event.preventDefault();
var bilangan1 = $("#v1").val();
var bilangan2 = $("#v2").val();
var bilangan3 = $("#v3").val();
var bilangan4 = $("#v4").val();
var bilangan5 = $("#v5").val();
var bilangan6 = $("#v6").val();
jQuery.ajax({
type: "POST",
url: "<?php echo base_url(); ?>"+"index.php/kalkulator/hitung",
dataType: 'json',
data: {v1: bilangan1, v2: bilangan2, v3: bilangan3, v4: bilangan4, v5: bilangan5, v6: bilangan6},
success: function(res) {
jQuery("#value").html(res.hasil);
}
});
});
});
</script>
的HTML：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Kalkulator</title>
<link href="<?php echo base_url();?>css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" type="text/css" href="<?php echo base_url();?>css/style.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
</head>
<body>
<div class="container">
<h1 class="form-header"></h1>
<form class="form-horizontal">
<?php echo form_open(); ?>
<h2>Kalkulator Hitungan</h2>
<br>
<div class="form-group col-sm-12">
<label class="control-label col-sm-3">Padat Tebar Ikan</label>
<div class="col-sm-6">
<?php
$v1 = array(
'class' => 'form-control',
'type' => 'number',
'name' => 'v1',
'id' => 'v1'
);
echo form_input($v1);
?>
</div>
<div class="col-sm-3">
<label class="control-label ">/ekor</label>
</div>
</div>
<div class="form-group col-sm-12">
<label class="control-label col-sm-3">Panjang Kolam</label>
<div class="col-sm-6">
<?php
$v2 = array(
'class' => 'form-control',
'type' => 'number',
'name' => 'v2',
'id' => 'v2'
);
echo form_input($v2);
?>
</div>
<div class="col-sm-3">
<label class="control-label ">/m2</label>
</div>
</div>
<div class="form-group col-sm-12">
<label class="control-label col-sm-3">Lebar</label>
<div class="col-sm-6">
<?php
$v3 = array(
'class' => 'form-control',
'type' => 'number',
'name' => 'v3',
'id' => 'v3'
);
echo form_input($v3);
?>
</div>
<div class="col-sm-3">
<label class="control-label ">/m2</label>
</div>
</div>
<div class="form-group col-sm-12">
<label class="control-label col-sm-3">Tinggi</label>
<div class="col-sm-6">
<?php
$v4 = array(
'class' => 'form-control',
'type' => 'number',
'name' => 'v4',
'id' => 'v4'
);
echo form_input($v4);
?>
</div>
<div class="col-sm-3">
<label class="control-label ">/m2</label>
</div>
</div>
<div class="form-group col-sm-12">
<label class="control-label col-sm-3">Harga Benih per ekor</label>
<div class="col-sm-6">
<?php
$v5 = array(
'class' => 'form-control',
'type' => 'number',
'name' => 'v5',
'id' => 'v5'
);
echo form_input($v5);
?>
</div>
<div class="col-sm-3">
<label class="control-label ">/ekor</label>
</div>
</div>
<div class="form-group col-sm-12">
<label class="control-label col-sm-3">Harga Konsumsi per kg</label>
<div class="col-sm-6">
<?php
$v6 = array(
'class' => 'form-control',
'type' => 'number',
'name' => 'v6',
'id' => 'v6'
);
echo form_input($v6);
?>
</div>
<div class="col-sm-3">
<label class="control-label ">/kg</label>
</div>
</div>
<div class="form-group col-sm-12">
<label class="control-label col-sm-3"></label>
<div class="col-sm-6">
<?php echo form_submit('submit', 'Hitung Sekarang', "class='btn btn-default submit'"); ?>
</div>
<div class="col-sm-3">
<label class="control-label "></label>
</div>
</div>
<div class="form-group col-sm-12">
<label class="control-label col-sm-3"></label>
<div class="col-sm-6">
<output id="value"></output>
<?php echo form_close(); ?>
</div>
<div class="col-sm-3">
<label class="control-label "></label>
</div>
</div>
</form>
<footer class="form-footer">© beagle company</footer>
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="js/jquery.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="js/bootstrap.min.js"></script>
</body>
</html>
做這行的jQuery（ 「＃值」）的一個的console.log HTML（res.hasil）。我不好，我不明白你的語言，但這是這一行的結果？：if（$ nilai ['hasil'] <30）{ $ laba =「Budidaya Anda akan gagal」; } – Akintunde007
是的，hasil是計算程序的結果。 –