How to select a object by function? [duplicate] - javascript

This question already has answers here:
How to select Fabric.js object programmatically
(4 answers)
Closed 5 years ago.
I would like to select a object by run function instead of by mouse click. But I couldn't find the function from the docs for Fabric JS.

js
canvas.setActiveObject();
can't work in 2.0.0-beta.4 ,I solved it by change the version to 1.7.17.

Related

How to add link to a button in html without using javascript? [duplicate]

This question already has answers here:
How do I create an HTML button that acts like a link?
(35 answers)
Closed 3 months ago.
button tag without using java in html
I have try using javascript but i'm curious to know is their something we can use it without javascript
You mean like this?
<button>Link Button</button>
but why?

What is the difference between onclick and href for anchor tag? [duplicate]

This question already has answers here:
What's the difference between a link using href and onclick?
(3 answers)
Closed 1 year ago.
What is the difference from the <a onclick="window.location.href = 'example.com'">Example.com</a> to Example.com ?
The one requires JavaScript to be enabled to call the code. This would break search engines from following the links. The other is a standard HTML feature, not requiring any javascript.

js get element from window['id'] vs document.getElementById('id') [duplicate]

This question already has answers here:
Do DOM tree elements with IDs become global properties?
(5 answers)
Is there a spec that the id of elements should be made global variable?
(5 answers)
Closed 4 years ago.
What is better and what is the difference (performance, browser support...)?
I thought that DOM elements that have an id automatically create in a window object so you don't need to find them in DOM through getElementById. Am I right and what problems it could bring? I can't find any documentation on such a possibility of js window object.
Examples with window:
window['elementId'];
window.elementId;
The same result as getElementById and querySelector

Nested Webcomponents issue [duplicate]

This question already has an answer here:
Nested element (web component) can't get its template
(1 answer)
Closed 6 years ago.
I play with webcomponents using webcomponents.js and Shadydom polyfills.
My code is on Github : https://github.com/olofweb/webcomponents-action-bar
The first webcomponent is my-action-2. It is a button with a title. The second webcomponent is my-action-bar. The goal is to programmatically add my-action-2 into my-action-bar.
For this, my-action-bar has an addAction() method who create a new my-action-2 element and add it to the shadow DOM.
The problem is on my-action-2, line 33. Whenmy-action-2 is nested in my-action-bar, then the shadowRoot variable represent the shadow DOM of my-action-bar instead of my-action-2 !
It was a duplicate.
Github project updated if anyone is interested.

Dollar Sign is not declared [duplicate]

This question already has answers here:
Why do I get "$ is undefined" after using jQuery plugin?
(4 answers)
Closed 6 years ago.
https://studio.code.org/projects/applab/sL7lKBrbXvQbhRGBf54wrQ/
My project is about generating random sentences. How do I make it from here, so that the program picks a random sentence from the index, and displays it on the screen? Please help.
It says that the '$ is not declared'.
Eddie
My coding picture.
All you need to do is include jQuery in your HTML file like so:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script

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