[英]Retriving data from firebase web
I am trying to fetch the data for website using java script. 我正在尝试使用Java脚本获取网站的数据。 Problem I am getting is that I am unable to get the key of Users-->history-->location-->from-->(lat,lng). 我得到的问题是我无法获取用户密钥->历史记录->位置->从->(lat,lng)。 I am unable to find a syntax of it. 我找不到它的语法。
Code I am trying is 我正在尝试的代码是
var ref = firebase.database().ref("history/" + keys +"/location/from");
ref.on('value',gotDataa,errDataa);
function gotDataa(data){
//console.log(data.val());
var from = data.val();
var keys=Object.keys(from);
console.log(keys);
for(var i=0 ; i<keys.length;i++)
{
var k=keys[i];
var name = from[k].customer;
var phone = from[k].driver;
//console.log(name,phone,imag);
$('ul').append( '<li>' + name +" : " + phone+ '</li>' );
}
}
This should print the lat and lng of each item in the history: 这应该在历史记录中打印每个项目的经度和纬度:
var ref = firebase.database().ref("history/");
ref.on('value',gotDataa,errDataa);
function gotDataa(data){
data.forEach(function(child) {
var from = data.val().location.from;
console.log(from.lat+","+from.lng);
});
}
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