import E from 'wangeditor' const { $, BtnMenu } = E class PreViewMenu extends BtnMenu { constructor(editor) { // data-title属性表示当鼠标悬停在该按钮上时提示该按钮的功能简述 const $elem = E.$( `<div class="w-e-menu" data-title="预览"> <i>预览</i> </div>` ) super($elem, editor) this.editor = editor // <i class="w-e-icon-fullscreen"></i> } static preview() {} clickHandler() { PreViewMenu.preview(this.editor.txt.html()) } tryChangeActive(){} } export default PreViewMenu