5
我已经能够升级angularjs元件指令在角4. 可以使用这里的一个示例代码:是否可以升级angularjs atttribute指令以在角度4中使用?
[myScores.js]
angular.module('app.components.directives.myScores', [])
.directive('myScores', function() {
return {
scope: {
score: '=',
},
template: '<div>>>> Your score is {{score}} <<<',
link: function(scope) {
console.log("in myScores", scope)
}
};
});
[myScores.ts]
import { Directive, ElementRef, Injector, Input, Output, EventEmitter } from '@angular/core';
import { UpgradeComponent } from '@angular/upgrade/static';
@Directive({
selector: 'my-scores'
})
export class MyScoresDirective extends UpgradeComponent {
@Input() score: number;
constructor(elementRef: ElementRef, injector: Injector) {
super('myScores', elementRef, injector);
}
}
注意我正在使用UpgradeComponent升级myScores元素指令。 我试过同样的属性指令,但出现错误。有没有办法升级一个属性指令?
这里是我的升级属性指令的尝试:
[makeGreen.js]
angular.module('app.components.directives.makeGreen', [])
.directive('makeGreen', function() {
return {
restrict: 'A',
link: function(scope, element) {
console.log("in makeGreen", scope)
console.log("element", element)
element.css('color', 'green');
}
};
});
[makeGreen.ts]
import { Directive, ElementRef, Injector, Input, Output, EventEmitter } from '@angular/core';
import { UpgradeComponent } from '@angular/upgrade/static';
@Directive({
selector: '[makeGreen]'
})
export class MakeGreenDirective extends UpgradeComponent {
@Input() count: number;
@Output() clicked: EventEmitter<number>;
constructor(elementRef: ElementRef, injector: Injector) {
console.log("elementRef", elementRef.nativeElement)
super('makeGreen', elementRef, injector);
}
}
我得到一个错误时,加载一个类似这样的页面:
<div makeGreen>Text should be green</div>
我得到这个错误:
Error: Directive 'makeGreen' is not a component, it is missing template.