Javascript angularJS中的API调用紧随其后
我在一个爱奥尼亚移动项目中使用angular时遇到了一个问题,这段代码在我的桌面环境中运行得非常好。我对一台web服务器进行了三次API调用,每次调用500毫秒。但在使用较低连接的手机中,有时其中一个呼叫失败,因此整个过程失败。 有没有什么方法可以在前一个API调用完成的那一刻进行API调用?我的意思是,不使用固定的时间Javascript angularJS中的API调用紧随其后,javascript,angularjs,ionic-framework,timeout,Javascript,Angularjs,Ionic Framework,Timeout,我在一个爱奥尼亚移动项目中使用angular时遇到了一个问题,这段代码在我的桌面环境中运行得非常好。我对一台web服务器进行了三次API调用,每次调用500毫秒。但在使用较低连接的手机中,有时其中一个呼叫失败,因此整个过程失败。 有没有什么方法可以在前一个API调用完成的那一刻进行API调用?我的意思是,不使用固定的时间 //get member information $timeout(function() { membersService.getMember(community.url,
//get member information
$timeout(function() {
membersService.getMember(community.url, community.user.api_key, community.user.auth_token, $stateParams.userId).
success(function(data) {
$scope.member = data.result;
});
}, 500);
$timeout(function() {
messagesService.getConversation(community.url, community.user.api_key, community.user.auth_token, community.user.user_info.guid, $stateParams.userId, "from").
success(function(data) {
if(data.result["entities"].length > 0) {
messages = messages.concat(data.result["entities"]);
subject = "Re: "+data.result["entities"][data.result["entities"].length-1].title;
}
$scope.messageData.subject = subject;
});
}, 1000);
$timeout(function() {
messagesService.getConversation(community.url, community.user.api_key, community.user.auth_token, community.user.user_info.guid, $stateParams.userId, "to").
success(function(data) {
log = [];
if(data.result["entities"].length > 0) {
angular.forEach(data.result["entities"], function(v, k) {
v.owner_guid = $stateParams.userId;
log.push(v);
}, log);
messages = messages.concat(log);
}
var log = [];
var count = 0;
angular.forEach(messages, function(v, k) {
messages_reorder.push(v);
}, log);
});
}, 1500);
你可以用$q来做这个 您应该看看Angular Promise API。这是为了同样的目的。它允许您一个接一个地链接ajax调用
// this
$http.get('/api/v1/movies/avengers')
.success(function(data, status, headers, config) {
$scope.movieContent = data;
});
// is the same as
var promise = $http.get('/api/v1/movies/avengers');
promise.then(
function(payload) {
$scope.movieContent = payload.data;
});
更多详细信息这是实施嵌套承诺链的结果:
var loadMemberInfo = function( userId )
{
return membersService
.getMember(community.url, community.user.api_key, community.user.auth_token, $stateParams.userId)
.then(function(data)
{
$scope.member = data.result;
});
},
getConversationFrom = function() {
return messagesService
.getConversation(community.url, community.user.api_key, community.user.auth_token, community.user.user_info.guid, $stateParams.userId, "from")
.then(function(cf) {
if(cf.data.result["entities"].length > 0) {
messages = messages.concat(cf.data.result["entities"]);
subject = "Re: "+cf.data.result["entities"][cf.data.result["entities"].length-1].title;
}
$scope.messageData.subject = subject;
});
},
getConversationTo = function() {
messagesService
.getConversation(community.url, community.user.api_key, community.user.auth_token, community.user.user_info.guid, $stateParams.userId, "to")
.then(function(ct) {
log = [];
if(ct.data.result["entities"].length > 0) {
angular.forEach(ct.data.result["entities"], function(v, k) {
v.owner_guid = $stateParams.userId;
log.push(v);
}, log);
messages = messages.concat(log);
}
//order array
messages = messages.sort(function(a,b) { return a.time_created - b.time_created } );
var log = [];
var count = 0;
angular.forEach(messages, function(v, k) {
messages_reorder.push(v);
}, log);
});
},
orderFullConversation = function() {
$ionicLoading.hide();
console.log(messages);
if(messages_reorder.length > 5) {
var messages_partial = messages_reorder.slice(messages_reorder.length-5,messages_reorder.length);
}
else {
var messages_partial = messages_reorder;
}
$scope.messages = messages_partial;
$scope.community = community;
};
loadMemberInfo( $stateParams.userId )
.then( getConversationFrom )
.then( getConversationTo )
.then( orderFullConversation );
更多细节