問題描述

我正在嘗試在某些事件(例如，按鈕單擊)上打開特定標(biāo)記的彈出窗口.為此，我將 id 屬性添加到標(biāo)記并將所有標(biāo)記存儲(chǔ)在數(shù)組中.但是由于某種原因，當(dāng)我嘗試訪問數(shù)組內(nèi)的標(biāo)記的 id 屬性時(shí)，它是未定義的.

I'm trying to open a specific marker's popup on some event(say, button click). In order to do so I add an id property to a marker and store all markers in an array. But for some reason, the id property of a marker inside of an array is undefined when I try to access it.

var map = L.map('map').setView([51.505, -0.09], 13);
var markers = [];
var marker = L.marker([51.5, -0.09]);
marker["id"]="0";
marker.bindPopup('!');
marker.addTo(map);
markers.push(marker);

openPopupById("0");

function openPopupById(id) {
    for(var marker in markers) {
        alert("Marker's id " + marker["id"] + " target id " + id );
        if (marker["id"] === id) {
            //marker.openPopup();
            alert("opening " + id);
        }
    }
    alert(id);
}

更新好的，我找到了解決方案:我應(yīng)該將 for 替換為

UPDATE Ok, I found the solution: I should replace for with

for(var i = 0; i < markers.length; ++i)

并以 markers[i]["id"]

但是誰(shuí)能解釋一下為什么第一個(gè)版本不起作用?

But can someone explain me why the first version doesn't work?

推薦答案

我認(rèn)為你的錯(cuò)誤是使用push(在markers.push(marker)中)

I think your mistake is the use of push (in markers.push(marker))

要存儲(chǔ)標(biāo)記，您應(yīng)該使用

To store the markers, you should use

markers["id"] = marker;

你可以這樣打開你的彈出窗口

You can open your popup like that

markers["id"].openPopup();

讓標(biāo)記知道他們的 id

For the markers to know their id

marker.id = "id";

這篇關(guān)于傳單在按鈕單擊時(shí)打開特定標(biāo)記彈出窗口的文章就介紹到這了，希望我們推薦的答案對(duì)大家有所幫助，也希望大家多多支持html5模板網(wǎng)！