I have two component files: file1.component.ts and file2.component.ts. On a button event, I want to call a method from file2.component.ts (for example ngOnInit()) in file1.component.ts. Here is my code:
<!DOCTYPE html>
<html>
<head>
<title>angular2 playground</title>
<link rel="stylesheet" href="style.css" />
<script src="https://code.angularjs.org/2.0.0-beta.13/angular2-polyfills.js"></script>
<script src="https://code.angularjs.org/tools/system.js"></script>
<script src="https://code.angularjs.org/tools/typescript.js"></script>
<script src="config.js"></script>
<script src="https://code.angularjs.org/2.0.0-beta.13/Rx.js"></script>
<script src="https://code.angularjs.org/2.0.0-beta.13/angular2.dev.js"></script>
<script src="https://code.angularjs.org/2.0.0-beta.13/router.dev.js"></script>
<script src="https://code.angularjs.org/2.0.0-beta.13/http.min.js"></script>
<script>
System.import('app')
.catch(console.error.bind(console));
</script>
</head>
<body>
<my-app>
loading...
</my-app>
</body>
</html>
I want to call ngOnInit() method from the app.component.ts, in the content-list.component.ts.
Do not use life cycle methods(like ngOnInit..). Write a custom method, if you want use one method in another class you have two options.
use Viewchild() In first component create object to access any method.
Example:
class FirstComponent {
#ViewChild(SecondComponent)
private sec: SecondComponent;
sec.methodName();
}
Very simple this just extend the first component in second.
Related
I am trying to inject some React code into an HTML document. I am following React's own documentation and feeding their starter code (a simple like button) into the page. Everything was working great. I changed it to use JSX, changed it to a functional component using hooks instead of a class component with state. No problems.
However, whenever I include an import call and try to bring in another component, the component breaks on the page and stops displaying, but doesn't throw any kind of error I can see.
How do I develop in a "react-y" way with components and modularity while injecting it into an html page?
Here is the code I'm working with at the moment:
HTML document
<body>
<div id="react-root"></div>
<!-- inject react, reactDOM and JSX engine -->
<script src="https://unpkg.com/react#16/umd/react.development.js" crossorigin></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.development.js" crossorigin></script>
<script src="https://unpkg.com/babel-standalone#6/babel.min.js"></script>
<!-- point to component -->
<script src="transpiled/app.js"></script>
</body>
React Component
'use strict';
import {SecondComponent} from './components/SecondComponent';
const e = React.createElement;
const LikeButton = () => {
const [liked, setLiked] = React.useState(false);
if (liked) return 'You liked this functional component.'
const handleLikeClick = () => {
setLiked(true);
}
return (
<div>
<button onClick={handleLikeClick}>new like button with jsx</button>
{liked && <SecondComponent/>}
</div>
)
}
const domContainer = document.querySelector('#react-root');
ReactDOM.render(e(LikeButton), domContainer);
Like I said, any sort of import statement seems to be where it breaks. Can't find resources online about it. Thanks in advance for your help!
UPDATE: After a bit of research importing modules between several <script> tags is now possible.
This can be achieved adding the Babel Plugin attribute data-plugins and setting the value to "transform-es2015-modules-umd" which will enable the UMD pattern.
You'll also need to set type="text/babel" on each <script> tag.
This will allow you to use the import statements directly inside each file. Like this:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>React</title>
<script src="https://unpkg.com/react#16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom#16/umd/react-dom.development.js"></script>
<script src="https://unpkg.com/babel-standalone#6/babel.min.js"></script>
</head>
<body>
<div id="root"></div>
<script data-plugins="transform-es2015-modules-umd" type="text/babel" src="./Header.js"></script>
<script data-plugins="transform-es2015-modules-umd" type="text/babel" src="./App.js"></script>
</body>
</html>
Working Gist Example
I have written a simple example to demonstrate the use of bootstrap notify but its not working.
Below is my code:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="bootstrap-notify.js"></script>
<script src="bootstrap-notify.min.js"></script>
<script>$.notify("Hello World");</script>
</head>
<body>
</body>
Replace your script as below just add ready function it work fine. and also add bootstrap css for look good.
<script>
$(document).ready(function(){
$.notify("Hello World");
});
</script>
I tried to add to textarea a line of the row numbers with this example:
http://alan.blog-city.com/jquerylinedtextarea.htm
this is my code and I allready use the css and js in my project:
<!DOCTYPE html>
<html>
<head>
<title>CODE</title>
<link href="jquery-linedtextarea.css" rel="stylesheet">
<script src="jquery-linedtextarea.js"></script>
</head>
<body>
<textarea class="lined" name="mytext"></textarea>
<script>
$(function () {
$(".lined").linedtextarea(
{ selectedLine: 1 }
);
$("mytext").linedtextarea();
});
</script>
</body>
</html>
what I wrong ?
It seems you forget to call Jquery Library...
Just add the code below on your <head>:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"> </script>
And I believe you should delete that part:
$("mytext").linedtextarea();
I've made a code. It works for me. Check it out...
<html>
<head>
<title>JQuery LinedTextArea Demo</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script src="http://files.aw20.net/jquery-linedtextarea/jquery-linedtextarea.js"></script>
<link href="http://files.aw20.net/jquery-linedtextarea/jquery-linedtextarea.css" type="text/css" rel="stylesheet" />
</head>
<body>
<h1>JQuery LinedTextArea Demo</h1>
<p>Add a scrollable lined area to a standard TextArea control.</p>
<textarea class="lined" rows="10" cols="60">
JavaScript was originally developed by Brendan
Eich of Netscape under the name Mocha,
which was later renamed to LiveScript,
and finally to JavaScript.
The change of name from LiveScript to JavaScript roughly
coincided with Netscape adding support for
Java technology in its Netscape Navigator
web browser.
</textarea>
<script>
$(function() {
$(".lined").linedtextarea(
{selectedLine: 1}
);
});
</script>
</body>
</html>
I have a code like this:
parent.html:
<head>
<script
src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js">
</script>
<script src="jquery-ui-1.11.4/jquery-ui.min.js"></script>
<script>
$(function() {
$("#test").draggable().click(function() {
$("#objeto").attr('data', "child2.html").draggable();
});
});
</script>
</head>
<body>
<h2 id="test">text(draggable/click)</h2>
<object id="objeto" data="child1.html"></object>
</body>
and
child2.html:
<head>
<script
src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js">
</script>
<script src="jquery-ui-1.11.4/jquery-ui.min.js"></script>
<script>
$(function() {
$("#text").draggable();
});
</script>
</head>
<body id="text">child2 (draggable)
</body>
This works correctly, parent loads with child1 content and if you click on "text" it switches to child2, but what i want to know is:
am I downloading jquery.min.js and jquery-ui.min.js 2 times? or are is the second time pulled from cache? (since i'm asking for the same file again)
is there a way I could use jquery without including it on the child's header? (since it is already on the parent)
A Polymer noob...
I'm trying to create a custom element as per the Polymer API docs, where my main page looks like this:
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Polymer</title>
<script src="bower_components/platform/platform.js"></script>
<link rel="import" href="bower_components/polymer/polymer.html">
</head>
<body>
<div id="test"></div>
<polymer-element name="book-template" constructor="BookTemplate" noscript>
<template>
<style>
h1 { color: orange; }
</style>
<h1>Hello from some-foo</h1>
</template>
</polymer-element>
</body>
</html>
I know that the page content will render if I just put <book-template></book-template> on the page, or if I do something like this inside the <body> tag:
<script>
var book = document.createElement('book-template');
document.getElementById('test').appendChild(book);
</script>
But I'm trying to utilize the element's constructor attribute, assuming that this will create the element when placed somewhere inside of <body>:
<script>
var book = new BookTemplate();
</script>
...but getting a console message that BookTemplate() is not defined.
I'm sure it's something simple...any idea? Thanks in advance.
I guess you have to wait for the polymer-ready event, so that the constructor is available in the global window object http://jsbin.com/kosuf/2/edit?html,console,output:
<script>
document.addEventListener('polymer-ready',function() {
var book = new BookTemplate();
if (book) {
console.log('Ok');
}
});
</script>