ractive/src/Ractive/prototype/insert.js

Next-generation DOM manipulation

import getElement from 'utils/getElement';

export default function Ractive$insert ( target, anchor ) {
	if ( !this.rendered ) {
		// TODO create, and link to, documentation explaining this
		throw new Error( 'The API has changed - you must call `ractive.render(target[, anchor])` to render your Ractive instance. Once rendered you can use `ractive.insert()`.' );
	}

	target = getElement( target );
	anchor = getElement( anchor ) || null;

	if ( !target ) {
		throw new Error( 'You must specify a valid target to insert into' );
	}

	target.insertBefore( this.detach(), anchor );
	this.el = target;

	( target.__ractive_instances__ || ( target.__ractive_instances__ = [] ) ).push( this );
}