HTML5输入语法

Question

I've been following the Angular2 tutorial https://angular.io/docs/ts/latest/tutorial/toh-pt6.html and found the following input element syntax (under the "Add a Hero" heading):

<input #heroName />

This is supposedly setting the id attribute of the input element, but I could not find this syntax in the HTML5 specification ( https://www.w3.org/TR/html5/syntax.html#attributes-0 ).

Can anyone explain this syntax?

Answer 1

It's not referring to the element id of html5. It's strictly related to angular2 and is a Template reference variable .

So, as said in the official documentation,

The hash (#) prefix to "phone" means that we're defining a phone variable.

In your case is not "phone", but "heroName".