Question

我有5个信息同时出现，如“long”，“lat”，“speed”，“immat”和“date”。首先，只要信息仍然可用，每0.1秒新的5个信息进入，然后每次有另一组新的5信息可用，另一轮相同的事情发生。我想知道如何临时保留所有这些值并显示它。

var myPin = Table_Pins[immat];
myPin.Lat[i] = document.getElementById("Lat");
myPin.Long[i] = document.getElementById("Long");
myPin.immat[i] = document.getElementById("immat");
myPin.date[i] = document.getElementById("date");
myPin.speed[i] = document.getElementById("vitesse");

for (i=0; i<myPin.length; i++){
document.write("lat=" +myPin.Lat[i]);
document.write("long=" +myPin.Long[i]);
document.write("immat=" +myPin.immat[i]);
document.write("date=" +myPin.date[i]);
document.write("speed=" +myPin.speed[i]);

}

Answer 1

使用Object将数据存储在Array：

中

var pins = []; //this will contain a list of your objects, it's better than keeping an object containing arrays

//inside your function that stores data you will have this
var pin = {
        lat: document.getElementById('Lat'),
        long: document.getElementById('Long'),
        immat: document.getElementById('immat'),
        date: document.getElementById('date'),
        speed: document.getElementById('vitesse')
    };
pins.push(pin);
//and after pushing it you could add to DOM dynamically without looping over al the pins

假设你有一个<ul> id="pins"，你可以做类似的事情（就在pins.push(pin)之后）：

var pinUl = document.getElementById('pins'); //you can declare this after pins
//and now the code that adds an element to the HTML page
var pinLi = "<li>" + JSON.stringify(pin) + "</li>";
pinUl.innerHTML += pinLi; //append the pin at the end of the other

请参阅this example

请记住避免 document.write！

Answer 2

这只是全局和局部方差的问题。在全局中已定义var map = null时，避免在函数中定义var map。在函数中只有“map”就足够了，没有“var”。

循环连续流入信息

2 个答案: