获取MySql数据并将其存储到Javascript数组中 [英] Get MySql data and store it into Javascript array
问题描述
想要从Mysql检索记录数据并将其存储为以下格式的heatmap.js地图数据的Javascript数组:
want to retrieve a records data from Mysql and store it into Javascript array for heatmap.js map data in this format :
var testData = {max: 46, data: [{lat: 33.5363, lon:-117.044, value: 1},{lat: 33.5608, lon:-117.24, value: 1},..]};
现在我被困在这里,而且我不知道如何从Jquery连接到我的var testData = new Array();
,我该怎么做才能解决这个问题?
Now I get stuck at here, and I don't know how to connecting from Jquery into my var testData = new Array();
, How I should do to solve this?
(更新后的正确代码)
get_query.php
get_query.php
<?php
require_once('./db_con.php');
$dbcon=new db;
$query="SELECT (SELECT geo_lat FROM fun WHERE created_at <= DATE_SUB(NOW(), interval 1 minute) AS geo_lat," .
"(SELECT geo_long FROM fun WHERE created_at <= DATE_SUB(NOW(), interval 1 minute) AS geo_long";
$result = mysqli_query($dbcon,$query);
$data = array();
while($row= mysqli_fetch_assoc($result)){
$data[] = array("lat"=>$row["geo_lat"], "lon"=>$row["geo_long"], "value"=>1);
$post_data = json_encode(array('max' => 46, 'data' => $data));
}
echo $post_data;
?>
my_data.js来自此处:
my_data.js based from here:
jQuery.extend({
getValues: function(url) {
var result = null;
$.ajax({
url: url,
type: 'get',
dataType: 'json',
async: false,
success: function(data) {
result = JSON.stringify(data);
}
});
return result;
}
});
var testData = $.getValues("get_query.php");
感谢Orangepill和Chrislondon.
Thanks to Orangepill and Chrislondon.
推荐答案
所以您的问题是如何将jQuery连接到var data
,这样我就不会在PHP代码中遇到很多问题.在成功功能中,您可以这样设置var data
:
So your question is how to connect your jQuery to your var data
so I won't get into the myriad of problems in your PHP code. In your success function you can set the var data
like so:
var data = new Array();
$(function() {
$.ajax({
type: "post",
url: "get_query.php",
data: $(this).serialize(),
dataType: "json"
}).done(function(response) {
data = response;
});
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