如何在谷歌事件监听器触发后在angular2中更新视图？
如何在谷歌事件监听器触发后在angular2中更新视图？
提问于 2015-07-11 09:01:41
我正在尝试在触发事件侦听器后更新视图。但是，该更改不会被检测到，并且在检测到另一个更改之前不会更新。
import {
Component, View, bootstrap
} from 'angular2/angular2';
@Component({
selector: 'app'
})
@View({
template: '{{keyword}} <input id="keyword" /><br/><span (click)="update()">{{click}}</span>'
})
class App {
keyword;
autocomplete;
click;
constructor() {
var _this = this;
var input = (document.getElementById('keyword'));
this.autocomplete = new google.maps.places.Autocomplete(input);
google.maps.event.addListener(this.autocomplete, 'place_changed', function(){
console.log('place change');
_this.keyword = "updated text";
_this.click = "not clicked";
});
this.keyword = "original text";
this.click = "click me after selection is made to force change";
}
update() {
console.log("click");
this.click = "clicked";
}
}
bootstrap(App);<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="style.css" />
<script data-require="jquery@2.1.4" data-semver="2.1.4" src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
<script src="https://jspm.io/system.js"></script>
<script src="https://code.angularjs.org/2.0.0-alpha.30/angular2.dev.js"></script>
<script src="https://maps.googleapis.com/maps/api/js??v=3.exp&libraries=places"></script>
</head>
<body>
<app></app>
<script>
System.import('main');
</script>
</body>
</html>
如果更改输入中的位置，则左侧的文本也应更改。它仅在检测到其他更改后才会更改，例如，单击下面的文本。
我做错了什么?我该如何做对？
回答 1
Stack Overflow用户
回答已采纳
发布于 2015-07-12 01:29:40
@jhadesdev将我引向了正确的方向，但我需要的不是zone.runOutsideAngular()，而是zone.run()。下面是完整的javascript代码：
import {
Component, View, bootstrap, NgZone
} from 'angular2/angular2';
@Component({
selector: 'app'
})
@View({
template: '{{keyword}} <input id="keyword" /><br/><span (click)="update()">{{click}}</span>'
})
class App {
keyword;
autocomplete;
click;
zone: NgZone;
constructor(zone:NgZone) {
this.zone = zone;
var input = (document.getElementById('keyword'));
this.autocomplete = new google.maps.places.Autocomplete(input);
google.maps.event.addListener(this.autocomplete, 'place_changed', ()=>{
this.zone.run(() => {
console.log('place change');
this.keyword = "updated text";
this.click = "not clicked";
});
});
this.keyword = "original text";
this.click = "click me after selection is made to force change";
}
update() {
console.log("click");
this.click = "clicked";
}
}
bootstrap(App);
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/31352397
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