作为一个angularJS新手,我很困惑我必须绑定到从服务返回的函数来更新视图,而不是数据本身,我找不到任何解释这个的官方文档,有人知道为什么吗?
<div ng-controller="MyCtrl">
binding to a function works!
<p ng-bind-html-unsafe="tempLog.returnBuffer()"></p>
<br><br>
bind to the service variable: Doesn't work, why?
<p>log={{tempLog.buffer}}</p>
<br><br>
bind to scope var instead of service var, still doesn't work
<p>log={{logBuffer}}</p>
bind to a scope var which points to the service Function, works!
<p>log={{pLogFunc()}}</p>
<button ng-click="addText('more')">Trace</button><br>
</div>
JS代码
var myApp = angular.module('myApp',[]);
myApp.factory('myLog', function() {
var internalBuffer = "";
return {
buffer:internalBuffer,
trace:function(input){
internalBuffer = internalBuffer + "<br>" +input;
buff = input;
},
returnBuffer:function(){
return internalBuffer;
}
}
});
function MyCtrl($scope, myLog){
$scope.tempLog = myLog;
$scope.logBuffer = myLog.buffer;
$scope.pLogFunc = myLog.returnBuffer;
myLog.trace("aaa");
$scope.addText = function(str){
myLog.trace(str)
}
}