问Rich Text Edit HTML / Modify without html tags (Quill)

EN

//Create container
var container = $('.editor').get(0);

//Setup Quill
var quill = new Quill(container, {
    modules: {
    clipboard: {
      matchVisual: false
    },
        toolbar: '#toolbar-container'
    },
    placeholder: 'Compose an epic...',
    theme: 'snow'
});

//Edit functions
$("#editPage").click(function () {
    var $this = $(this);
    var introText = document.getElementById('introText');

    var existingContent = $('#introText').html();

    if ($this.attr('editing') != '1') {
        $this.html('<i class="fas fa-search"></i> Preview').attr('editing', 1);

        //Set content on edit/save
        quill.setContents([
            {
                insert: existingContent
            }
        ]);

    } else {
        $this.html("<i class='fas fa-pencil-alt'></i> Modify this page").removeAttr('editing');
        delta = quill.getContents();

        var html = quill.root.innerHTML;
        introText.innerHTML = html;
    }

});