Javascript ReactJS组件将数据传回父组件不工作
我正在开发一个ReactJS组件,该组件通过GoogleMapsJavaScriptAPI呈现GoogleMap。在地图上,我动态地放置显示不同分销商位置的标记。现在,模拟数据来自一系列具有不同信息的分发服务器,并通过循环进行迭代。当点击一个标记时,我有一个显示分销商详细信息的信息窗口。现在,在这个信息窗口中,我有一个按钮,允许客户选择此分销商 GoogleMap组件归ChoosedDistributor组件所有。单击按钮时,我希望通过回调函数将ID(现在是一个带有分发服务器名称的字符串)发送回ChoosedDistributor组件 问题是我得到了一个Javascript ReactJS组件将数据传回父组件不工作,javascript,google-maps-api-3,reactjs,Javascript,Google Maps Api 3,Reactjs,我正在开发一个ReactJS组件,该组件通过GoogleMapsJavaScriptAPI呈现GoogleMap。在地图上,我动态地放置显示不同分销商位置的标记。现在,模拟数据来自一系列具有不同信息的分发服务器,并通过循环进行迭代。当点击一个标记时,我有一个显示分销商详细信息的信息窗口。现在,在这个信息窗口中,我有一个按钮,允许客户选择此分销商 GoogleMap组件归ChoosedDistributor组件所有。单击按钮时,我希望通过回调函数将ID(现在是一个带有分发服务器名称的字符串)发送回
未捕获类型错误:当我单击按钮时,无法读取未定义的属性'callbackParent'。这可能是一个范围问题,因为当我在循环(?)中时,此
不是指GoogleMap组件本身
然后,我尝试在循环外部创建一个变量callbackParent
,该变量包含this.props.callbackParent
,该变量应链接回ChoosedDistributor组件中的接收函数。然后我在按钮onclick上调用这个变量。这也不起作用,因为我得到了一个未捕获的引用错误:callbackParent未定义
如果有人能解决这个问题,我将不胜感激。我是遗漏了什么,还是一个明显的语法错误?提前谢谢
下面是我的代码
选择Distributor组件
var ChooseDistributor = React.createClass({
getSelectedDistributor: function(company){
alert(company);
},
render: function(){
return(
<div>
<Header headerClass="title" title="Choose distributor"/>
<div className="fillViewPort">
<GoogleMap enableIwSelectButton={true} callbackParent={this.getSelectedDistributor}/>
</div>
<NavBar />
</div>
);
}
})
module.exports = ChooseDistributor;
var chooseddistributor=React.createClass({
getSelectedDistributor:功能(公司){
警报(公司);
},
render:function(){
返回(
);
}
})
module.exports=选择Distributor;
谷歌地图组件:
var GoogleMap = React.createClass({
getInitialState: function(){
return {
// LOCATIONS STATE SHOULD GET DATA FROM STORE
locations: [
// ARRAY VALUES: [0]=LAT, [1]=LNG, [2]=COMPANY, [3]=ADDRESS, [4]=CITY, [5]=WEBSITE, [6]=PHONE, [7]=EMAIL
[55.628353, 12.388910, 'Distributor One', 'First street 11', '1111 Copenhagen', 'www.company.com', '+4512345678', 'distributor@company.dk'],
[55.623321, 12.388438, 'Distributor Two', 'Second street 22', '2222 Copenhagen', 'www.company.com', '+4512345678', 'distributor@company.dk'],
[55.670710, 12.389256, 'Distributor Three', 'Third street 33', '3333 Copenhagen', 'www.company.com', '+4512345678', 'distributor@company.dk'],
[55.581179, 12.295583, 'Distributor Four', 'Fourth street 44', '4444 Copenhagen', 'www.company.com', '+4512345678', 'distributor@company.dk'],
[55.647296, 12.284211, 'Distributor Five', 'Fifth street 55', '5555 Copenhagen', 'www.company.com', '+4512345678', 'distributor@company.dk']
]
}
},
componentDidMount: function(){
var locations = this.state.locations;
var enableIwSelectButton = this.props.enableIwSelectButton;
var callbackParent = this.props.callbackParent;
var map = new google.maps.Map(document.getElementById('googleMap'), {
zoom: 11,
center: new google.maps.LatLng(locations[0][0], locations[0][1]), // CENTER PROPERTY SHOULD GET COORDINATES OF THE DEVICE CURRENT LOCATION IF PERMITTED.
mapTypeControlOptions: {
mapTypeIds: [google.maps.MapTypeId.ROADMAP]
},
mapTypeId: google.maps.MapTypeId.ROADMAP,
disableDefaultUI: true
});
var infoWindow = new google.maps.InfoWindow();
var marker, i;
// PLACE MARKER ON MAP FOR EACH DISTRIBUTOR POSITION IN ARRAY.
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][0], locations[i][1]),
map: map
});
// ADD INFOWINDOW WITH DISTRIBUTOR DETAILS TO EACH MARKER.
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infoWindow.setContent('<p class="iwTitle">' + locations[i][2] + '</p>'+
'<p class="iwText">' + locations[i][3] + '<br>' +
locations[i][4] + '<br>' +
'<a href="http://' + locations[i][5] + '">' + locations[i][5] + '</a></p>' +
'<p class="iwText"><i class="fa fa-phone iwIcons"></i>' + locations[i][6] + '<br>' +
'<i class="fa fa-envelope iwIcons"></i><a href="mailto:"' + locations[i][7] + '>' + locations[i][7] + '</a></p>' +
(enableIwSelectButton ? '<button type="button" class="iwButton" onclick={this.props.callbackParent(locations[i][3])}><p>Select Distributor</p></button>' : ''));
infoWindow.open(map, marker);
}
})(marker, i));
}
},
render: function(){
return(
<div id="googleMap" className="size-100-pct" />
);
}
})
module.exports = GoogleMap;
var GoogleMap=React.createClass({
getInitialState:函数(){
返回{
//位置状态应从存储中获取数据
地点:[
//数组值:[0]=LAT、[1]=LNG、[2]=COMPANY、[3]=ADDRESS、[4]=CITY、[5]=WEBSITE、[6]=PHONE、[7]=EMAIL
[55.628353,12.388910,'Distributor One','First street 11','1111 Copenhagen','www.company.com','+4512345678','distributor@company.dk'],
[55.623321,12.388438,'分销商二','Second street 22','2222 Copenhagen','www.company.com','+4512345678','distributor@company.dk'],
[55.670710,12.389256,'Distributor Three','Third street 33','3333 Copenhagen','www.company.com','+4512345678','distributor@company.dk'],
[55.581179,12.295583,'Distributor Four','Fourth street 44','4444 Copenhagen','www.company.com','+4512345678','distributor@company.dk'],
[55.647296,12.284211,'Distributor Five street 55','5555 Copenhagen','www.company.com','+4512345678','distributor@company.dk']
]
}
},
componentDidMount:function(){
变量位置=this.state.locations;
var enableIwSelectButton=this.props.enableIwSelectButton;
var callbackParent=this.props.callbackParent;
var map=new google.maps.map(document.getElementById('googleMap'){
缩放:11,
center:new google.maps.LatLng(locations[0][0],locations[0][1]),//如果允许,center属性应获取设备当前位置的坐标。
mapTypeControlOptions:{
MapTypeId:[google.maps.MapTypeId.ROADMAP]
},
mapTypeId:google.maps.mapTypeId.ROADMAP,
disableDefaultUI:true
});
var infoWindow=new google.maps.infoWindow();
var标记,i;
//在地图上为阵列中的每个分配器位置放置标记。
对于(i=0;i'+位置[i][2]+''+
“”+位置[i][3]+”
'+
位置[i][4]+'
'+
“
”+
“”+位置[i][6]+”
'+
“
”+
(启用IWSelectButton?“选择分发服务器:”);
信息窗口。打开(地图、标记);
}
})(marker,i));
}
},
render:function(){
返回(
);
}
})
module.exports=谷歌地图;
更新:
多亏了@Radio-我的问题解决了。解决方案是为每个按钮提供一个Id,然后根据该Id获取按钮,并向其添加一个eventlistener,如下所示:
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infoWindow.setContent('<p class="iwTitle">' + locations[i][2] + '</p>'+
'<p class="iwText">' + locations[i][3] + '<br>' +
locations[i][4] + '<br>' +
'<a href="http://' + locations[i][5] + '">' + locations[i][5] + '</a></p>' +
'<p class="iwText"><i class="fa fa-phone iwIcons"></i>' + locations[i][6] + '<br>' +
'<i class="fa fa-envelope iwIcons"></i><a href="mailto:"' + locations[i][7] + '>' + locations[i][7] + '</a></p>' +
(enableIwSelectButton ? '<button type="button" id="btnSelect' + i + '" class="iwButton"><p>Select Distributor</p></button>' : ''));
infoWindow.open(map, marker);
var el = document.getElementById("btnSelect" + i);
el.addEventListener("click", function(){callbackParent(locations[i][2])});
}
})(marker, i));
google.maps.event.addListener(标记,'click',(函数(标记,i){
返回函数(){
infoWindow.setContent(''+位置[i][2]+'
'+
“”+位置[i][3]+”
'+
位置[i][4]+'
'+
“
”+
“”+位置[i][6]+”
'+
“
”+
(启用IWSelectButton?“选择分发服务器:”);
信息窗口。打开(地图、标记);
var el=document.getElementById(“BTSELECT”+i);
艾尔·阿德文
myFn:()=>{
this.props.any();
}
var self = this.
myFn:function(){
self.props.any();
}
infoWindow.setContent(... '<button type="button" class="iwButton"><p>Select Distributor</p></button>' : ''));
infoWindow.open(map, marker);
var el = document.getElementsByClassName("iwButton");
el.addEventListener("click", function() { callbackParent(locations[i][3]) });