需要将逐个值添加到逗号分隔列表中的数组

Question

我需要在逗号分隔列表中添加一个值

我的代码

var Plist, Llist;
for (var i = 0; i < results.length; i++) {
    var id = results[i].id;
    if (id.startsWith("P")) {
        Plist = // Add comma separated value
    } else if (id.startsWith("L")) {
        Llist = // add comma repeated value
    }
}

请建议更好的解决方案......

Answer 1

var Plist = "", Llist = "";
for (var i = 0; i < results.length; i++) {
    var id = results[i].id;
    if (id.startsWith("P")) {
        Plist += id + ",";
    } else if (id.startsWith("L")) {
        Llist += id + ",";
    }
}

if (Plist.indexOf(',') !== -1) {
    Plist = Plist.substring(0, Plist.length - 1);
}

if (Llist.indexOf(',') !== -1) {
    Llist = Llist.substring(0, Llist.length - 1);
}