[英]Send data from .txt file to JavaScript array
I have following simple.txt file: 我有以下simple.txt文件:
new google.maps.LatLng(37.782551, -122.445368)
new google.maps.LatLng(37.754665, -122.403242)
new google.maps.LatLng(37.753837, -122.403172)
new google.maps.LatLng(37.752986, -122.403112)
new google.maps.LatLng(37.751266, -122.403355)
following JavaScript code: 以下JavaScript代码:
function initialize() {
var mapOptions = {
zoom: 13,
center: new google.maps.LatLng(37.774546, -122.433523),
mapTypeId: google.maps.MapTypeId.SATELLITE
};
map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
var pointArray = new google.maps.MVCArray(taxiData);
heatmap = new google.maps.visualization.HeatmapLayer({
data: pointArray
});
heatmap.setMap(map);
}
and following array: 和以下数组:
var taxiData = [
new google.maps.LatLng(37.782551, -122.445368)
new google.maps.LatLng(37.754665, -122.403242)
new google.maps.LatLng(37.753837, -122.403172)
new google.maps.LatLng(37.752986, -122.403112)
new google.maps.LatLng(37.751266, -122.403355)
];
I would like to send my data from simple.txt to taxiData array in JavaScript. 我想将数据从simple.txt发送到JavaScript中的taxiData数组。 I have tried something like this (without success): 我已经尝试过这样的事情(没有成功):
var taxiData = [
<?php
echo file_get_contents("simple.txt");
?>
];
Can you help me? 你能帮助我吗?
You need to separate the array elements with commas. 您需要使用逗号分隔数组元素。 You can do that easily enough in PHP: 您可以在PHP中足够容易地做到这一点:
<?php echo implode(',', explode('\n', file_get_contents("simple.txt"))); ?>
That simply breaks the file into an array of newline-delimited elements, then joins them back together using commas, creating a valid format that can be passed into the JavaScript code without issue. 只需将文件分成换行符分隔的元素数组,然后使用逗号将它们重新连接在一起,即可创建有效的格式,该格式可以毫无问题地传递到JavaScript代码中。
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