Vue.prototype.$mount = function (
el?: string | Element,
hydrating?: boolean
): Component {
el = el && inBrowser ? query(el) : undefined
return mountComponent(this, el, hydrating) // $mount真正调用的方法
}
Vue.prototype.$mount = function( el, hydrating ) {
if ( el != null )
throw new Error( 'Mount element is not supported' );
mountComponent( this, el, hydrating );
if ( this.$parent == null && this.$el.widget == null ) {
if ( this.$el.tagName != 'Window' )
throw new Error( 'Top level element must be a Window' );
this.$el._mountWindow();
this.$on( 'hook:destroyed', () => {
this.$el._destroyWindow();
} );
}
return this;
};