使用图表js并让它做我需要的工作,即从Web服务中提取数据并使用$interval
进行更新。当我使用内置更新功能更新图表时,它会按预期再次显示,但也会显示旧数据。我以为我正在从数组中清除数据,我对角度更新,所以也许我忽略了一些东西。
这是发生了什么的js。
angular.module('myapp', [])
.controller('MainCtrl', function($scope, $http, $interval) {
$scope.doughnutData = [];
var myDoughnut = '';
onload = function() {
$http.get('https://api.myjson.com/bins/59zvx').success(function(returnedData) {
$scope.username = returnedData.name;
$scope.totalscore = returnedData.totalScore.toFixed(3);
returnedData.models.forEach(function(x) {
var score = x.score.toFixed(3);
console.debug(score);
if (score >= 75) {
$scope.doughnutData.push({
'value': x.score,
'color': '#F7464A',
'highlight': '#FF5A5E',
'label': x.name
});
} else if (score >= 50) {
$scope.doughnutData.push({
'value': x.score,
'color': '#FDB45C',
'highlight': '#FFC870',
'label': x.name
});
} else {
$scope.doughnutData.push({
'value': x.score,
'color': '#424242',
'highlight': '#686868',
'label': x.name
});
}
});
$scope.doughnutData = sortByKey($scope.doughnutData, 'value');
var ctx = document.getElementById("chart-area").getContext("2d");
myDoughnut = new Chart(ctx).Doughnut($scope.doughnutData, {
responsive: true
});
});
mainInterval = $interval(function() {
doughnutData = '';
$http.get('https://api.myjson.com/bins/59zvx').success(function(returnedData) {
$scope.username = returnedData.name;
$scope.totalscore = returnedData.totalScore.toFixed(3);
returnedData.models.forEach(function(x) {
var score = x.score.toFixed(3);
console.debug(score);
if (score >= 75) {
$scope.doughnutData.push({
'value': x.score,
'color': '#F7464A',
'highlight': '#FF5A5E',
'label': x.name
});
} else if (score >= 50) {
$scope.doughnutData.push({
'value': x.score,
'color': '#FDB45C',
'highlight': '#FFC870',
'label': x.name
});
} else {
$scope.doughnutData.push({
'value': x.score,
'color': '#424242',
'highlight': '#686868',
'label': x.name
});
}
});
$scope.doughnutData = sortByKey($scope.doughnutData, 'value');
myDoughnut.segments = doughnutData;
myDoughnut.update();
});
}, 5000);
$scope.$apply();
};
function sortByKey(array, key) {
return array.sort(function(a, b) {
var x = a[key];
var y = b[key];
return ((x < y) ? -1 : ((x > y) ? 1 : 0));
});
}
});
所以它从9个值开始,当它更新时它有18个等等。目前没有任何东西会更新(我现在就把它移到我的生产webservice中)。我在想doughnutData = '';
部分的$interval
会清除它吗?
希望包含html以更好地了解正在发生的事情:
<html>
<head>
<script src="https://code.jquery.com/jquery-2.1.4.min.js"></script>
<script src="../Chart.js"></script>
<script src="../src/Chart.Doughnut.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.15/angular.min.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="../script.js"></script>
</head>
<body ng-app="myapp" ng-controller="MainCtrl">
<div id="canvas-holder">
<canvas id="chart-area" width="50" height="50"></canvas>
</div>
</body>
</html>
答案 0 :(得分:1)
尝试更改mainInterval函数
doughnutData = '';
带
$scope.doughnutData = [];
在角度中,您可以通过$ scope对象访问字段
答案 1 :(得分:1)
public static object GetAssembly(string assemblyPath, string typeName)
{
AssemblyName assamblyName = AssemblyName.GetAssemblyName(assemblyPath);
Assembly assembly = Assembly.Load(assamblyName);
Type type = assembly.GetType(typeName);
object instanceOfMyType = Activator.CreateInstance(type);
return instanceOfMyType;
}