我有一个网络应用程序,将为每个用户绘制一个折线(跟踪运动),我想要纳入一些功能,允许网络应用程序用户通过更改多边形的颜色“聚焦在某个用户”.它必须首先将所有折线更改为红色,然后将所选折线更改为蓝色.我认为这是最好避免专注于一条线,然后试图集中在另一条线上,让他们都是蓝色的.我真的不知道如何实现这一点,但是我有功能,当按下该名称时返回一个用户标识.我只需要遍历每个对象(每个用户的折线)将它们首先变为红色,然后将具体的一个更改为蓝色.下面是一些代码.如果你能指出我正确的方向,我会很感激.谢谢.这是我的代码的精简版本,所以我希望它提供足够的信息.

function User(id) {
this.id = id;

this.locations = [];

this.mark = 0;

this.getId = function() {
    return this.id;
};

this.addLocation = function(latitude,longitude) {
    this.locations[this.locations.length] = new google.maps.LatLng(latitude,longitude);        
};
var polyline;
this.drawPolyline = function(loc) {
        polyline = new google.maps.Polyline({
        map: map,path: loc,strokeColor: "#FF0000",strokeOpacity: 1.0,strokeWeight: 2
        });
    polyline.setMap(map);
};

this.removePolyline = function() {
    if (polyline != undefined) {
        polyline.setMap(null);
        }
    }
this.get_user_info = function(user_id) {

var datastr = 'id=' + user_id;
$.ajax({    
    type: "POST",url: 'user_api.PHP',data: datastr,dataType: 'json',success: function(data){
        var phone_id = data[0];
        var leftDiv = document.createElement("div"); //Create left div
        leftDiv.id = "left"; //Assign div id
        leftDiv.setAttribute("style","float:left; width:66.5%; line-height: 26px; text-align:left; font-size:12pt; padding-left:8px; height:26px;"); //Set div attributes
        leftDiv.style.background =  divColor;
        //user_name = document.createTextNode(fullName + ' '); //Set user name          
        a = document.createElement('a');
        a.href ="javascript:setFocus('" + phone_id + "');";
        a.innerHTML = fullName + ' ';
        leftDiv.appendChild(a);
      }
    });
  }
}

function setFocus(phone_id) {
    alert(phone_id);
}
function Users() {
this.users = {};

this.createUser = function(id) {
    this.users[id] = new User(id);
    return this.users[id];
};

this.getUser = function(id) {
    return this.users[id];      
};

this.removeUser = function(id) {
    var user = this.getUser(id);
    delete this.users[id];
    return user;
};
}

var users = new Users();

this.drawPolyline = function(loc) {
        this.polyline = new google.maps.Polyline({//<--note the this
        map: map,strokeWeight: 2
        });
    this.polyline.setMap(map);
};

Users.prototype.highlightLine=function(id)
{
  for(var k in this.users)
  {
    this.users[k].polyline.setOptions({strokeColor:(id===k)?'blue':'red'});
  }
}

//use it
users.highlightLine(5)//will highlight the line for user with id 5