Hi Guys,
You might face this error when we try add a newly created component in Angular 2/4/5.
Let's have a look at the complete stack trace:
ERROR Error: The selector "app-root" did not match any elements
at DefaultDomRenderer2.selectRootElement (platform-browser.js:2791)
at DebugRenderer2.selectRootElement (core.js:14962)
at createElement (core.js:10279)
at createViewNodes (core.js:13409)
at createRootView (core.js:13338)
at callWithDebugContext (core.js:14739)
at Object.debugCreateRootView [as createRootView] (core.js:14040)
at ComponentFactory_.create (core.js:10959)
at ComponentFactoryBoundToModule.create (core.js:3919)
at ApplicationRef.bootstrap (core.js:5730)
This would come if you have placed the newly created component selector in the root component .
Let's look at the working code:
You might face this error when we try add a newly created component in Angular 2/4/5.
Let's have a look at the complete stack trace:
ERROR Error: The selector "app-root" did not match any elements
at DefaultDomRenderer2.selectRootElement (platform-browser.js:2791)
at DebugRenderer2.selectRootElement (core.js:14962)
at createElement (core.js:10279)
at createViewNodes (core.js:13409)
at createRootView (core.js:13338)
at callWithDebugContext (core.js:14739)
at Object.debugCreateRootView [as createRootView] (core.js:14040)
at ComponentFactory_.create (core.js:10959)
at ComponentFactoryBoundToModule.create (core.js:3919)
at ApplicationRef.bootstrap (core.js:5730)
Let's look at the working code:
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>MyFirstApp</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<app-root></app-root>
</body>
</html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>MyFirstApp</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<app-root></app-root>
</body>
</html>
Remember this code is working fine , now lets see the erroneous code.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>MyFirstApp</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<app-mycomponent></app-mycomponent>
</body>
</html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>MyFirstApp</title>
<base href="/">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
<app-mycomponent></app-mycomponent>
</body>
</html>
So the error is due to the app-mycomponent which is not present. So , how to fix this error ? You need to add the new component in the app component , not in the index.html.
<app-mycomponent></app-mycomponent>
<div style="text-align:center">
<h1>
Welcome {{title}}!
</h1>
<img width="300" src="xyz">
</div>
<div style="text-align:center">
<h1>
Welcome {{title}}!
</h1>
<img width="300" src="xyz">
</div>
Now, we see the output as:
mycomponent works!
Links:
Refer to similar answers in Stack Overflow site.
No comments:
Post a Comment