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I have a template in the component with 4 div tags. The JavaScript function I want to call, changeValue(), is supposed to change the content of the first div from 1 to Yes!. I'm new to TypeScript and Angular 2, so I'm not sure how I can get the template to interact with the function from dtest2.js:
/**app.component.ts */
import { Component } from '@angular/core';
@Component({
selector: 'my-app',
template: `
<div id="boolean"><p id="bv">1</p></div>
<div id="numeric"><p id="nv">2</p></div>
<div id="string"><p id="sv">3</p></div>
<div id="enum"><p id="ev">4</p></div>
`
})
export class AppComponent { }
//dtest2.js
function changeValue(){
var newVal= "Yes!";
document.getElementById("bv").innerHTML= newVal;
}
changeValue();<html>
<head>
<title>Angular 2 QuickStart</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="styles.css">
<!-- Polyfill(s) for older browsers -->
<script src="node_modules/core-js/client/shim.min.js"></script>
<script src="node_modules/zone.js/dist/zone.js"></script>
<script src="node_modules/reflect-metadata/Reflect.js"></script>
<script src="node_modules/systemjs/dist/system.src.js"></script>
<script src="file:^html/angular/app/bs.min.js"></script>
<script src="file:^html/dtest2.js"></script>
<script src="systemjs.config.js"></script>
<script>
System.import('app').catch(function(err){ console.error(err); });
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>
804
Is there a special reason to use this external js function?
It would be better to use Angular's binding methods to solve your problem..
/**app.component.ts */
import { Component } from '@angular/core';
declare function changeValues(anyArgs: string, canBeHere: string) : void;
@Component({
selector: 'my-app',
template: `
<div id="boolean"><p id="bv">{{booleanValue ? 'Yes' : 'No'}}</p></div>
<div id="numeric"><p id="nv">2</p></div>
<div id="string"><p id="sv">3</p></div>
<div id="enum"><p id="ev">4</p></div>
`
})
export class AppComponent {
booleanValue: boolean = true;
constructor() { changeValues(...); }
anyFunctionToChangeTheValue() {
this.booleanValue = false;
}
}
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