PHP数组到JS不工作

Question

I'm pretty lost, all I want to do is spend a array to my javascript code. I've seen a lot of examples, but none ends me working. I need some help. I'm pretty stuck.

functions.js

function cargaTemperatura(idsem){
    $.ajax({
        type: "POST",
        url: "load_temp.php",
        data: { idsem :  idsem },
        dataType: "json",
        success: function(data){
            alert(JSON.parse(data));
        },error: function(data){
            alert('error');
        }
    });
};

load_temp.php

<?php
include_once 'Includes/db.php';
$select = "SELECT * FROM CalTmp WHERE idsem='".$_POST['id_sem']."'";
$result = mysqli_query($link, $select) or die($select);
$array = mysqli_fetch_all($result,MYSQLI_ASSOC);
debug_to_console($result->num_rows);
debug_to_console($_POST['id_sem']);
echo json_encode($array);

</div>

Answer 1

My suggestion:
- Step 1: In load_temp.php. Hardcode idsem value. Check on browser. Make sure there has a json string
- Step 2: Add this line

header("Content-type: application/json");

after

<?php