回答

改写了一下layedit.js,将下面的代码覆盖掉以前的layedit.js就实现上传音频了

/** layui-v2.5.7 MIT License */; layui.define(["layer", "form"], function(t) {
    "use strict"; var e = layui.$, i = layui.layer, a = layui.form, l = (layui.hint(), layui.device()), n = "layedit", o = "layui-show", r = "layui-disabled", c = function() {
        var t = this; t.index = 0, t.config = {
            tool: ["strong", "italic", "underline", "del", "|", "left", "center", "right", "|", "link", "unlink", "face", "image","sound"], hideTool: [], height: 280
        }}; c.prototype.set = function(t) {
        var i = this; return e.extend(!0, i.config, t), i
    }, c.prototype.on = function(t, e) {
        return layui.onevent(n, t, e)}, c.prototype.build = function(t, i) {
        i = i || {}; var a = this, n = a.config, r = "layui-layedit", c = e("string" == typeof t?"#"+t: t), u = "LAY_layedit_"+ ++a.index, d = c.next("."+r), y = e.extend({}, n, i), f = function() {
            var t = [], e = {}; return layui.each(y.hideTool, function(t, i) {
                e[i]=!0
            }), layui.each(y.tool, function(i, a) {
                C[a]&&!e[a] && t.push(C[a])}), t.join("")}(), m = e(['<div class="'+r+'">', '<div class="layui-unselect layui-layedit-tool">'+f+"</div>", '<div class="layui-layedit-iframe">', '<iframe id="'+u+'" name="'+u+'" textarea="'+t+'" frameborder="0"></iframe>', "</div>", "</div>"].join("")); return l.ie && l.ie < 8?c.removeClass("layui-hide").addClass(o): (d[0] && d.remove(), s.call(a, m, c[0], y), c.addClass("layui-hide").after(m), a.index)}, c.prototype.getContent = function(t) {
        var e = u(t); if (e[0])return d(e[0].document.body.innerHTML)},
    c.prototype.getText = function(t) {
        var i = u(t); if (i[0])return e(i[0].document.body).text()},
    c.prototype.setContent = function(t, i, a) {
        var l = u(t); l[0] && (a?e(l[0].document.body).append(i): e(l[0].document.body).html(i), layedit.sync(t))},
    c.prototype.sync = function(t) {
        var i = u(t); if (i[0]) {
            var a = e("#"+i[1].attr("textarea")); a.val(d(i[0].document.body.innerHTML))}},
    c.prototype.getSelection = function(t) {
        var e = u(t); if (e[0]) {
            var i = m(e[0].document); return document.selection?i.text: i.toString()}}; var s = function(t, i, a) {
        var l = this,
        n = t.find("iframe"); n.css({
            height: a.height
        }).on("load", function() {
            var o = n.contents(), r = n.prop("contentWindow"), c = o.find("head"), s = e(["<style>", "*{margin: 0; padding: 0;}", "body{padding: 10px; line-height: 20px; overflow-x: hidden; word-wrap: break-word; font: 14px Helvetica Neue,Helvetica,PingFang SC,Microsoft YaHei,Tahoma,Arial,sans-serif; -webkit-box-sizing: border-box !important; -moz-box-sizing: border-box !important; box-sizing: border-box !important;}", "a{color:#01AAED; text-decoration:none;}a:hover{color:#c00}", "p{margin-bottom: 10px;}", "img{display: inline-block; border: none; vertical-align: middle;}", "pre{margin: 10px 0; padding: 10px; line-height: 20px; border: 1px solid #ddd; border-left-width: 6px; background-color: #F2F2F2; color: #333; font-family: Courier New; font-size: 12px;}", "</style>"].join("")), u = o.find("body"); c.append(s), u.attr("contenteditable", "true").css({
                "min-height": a.height
            }).html(i.value || ""), y.apply(l, [r, n, i, a]), g.call(l, r, t, a)})},
    u = function(t) {
        var i = e("#LAY_layedit_"+t),
        a = i.prop("contentWindow"); return[a,
            i]},
    d = function(t) {
        return 8 == l.ie && (t = t.replace(/<.+>/g, function(t) {
            return t.toLowerCase()})),
        t
    },
    y = function(t, a, n, o) {
        var r = t.document,
        c = e(r.body); c.on("keydown", function(t) {
            var e = t.keyCode; if (13 === e) {
                var a = m(r),
                l = p(a),
                n = l.parentNode; if ("pre" === n.tagName.toLowerCase()) {
                    if (t.shiftKey)return; return i.msg("请暂时用shift+enter"),
                    !1
                }r.execCommand("formatBlock", !1, "<p>")}}), e(n).parents("form").on("submit",
            function() {
                var t = c.html(); 8 == l.ie && (t = t.replace(/<.+>/g, function(t) {
                    return t.toLowerCase()})),
                n.value = t
            }), c.on("paste",
            function(e) {
                r.execCommand("formatBlock", !1, "<p>"),
                setTimeout(function() {
                    f.call(t, c), n.value = c.html()}, 100)})}, f = function(t) {
        var i = this; i.document; t.find("*[style]").each(function() {
            var t = this.style.textAlign; this.removeAttribute("style"),
            e(this).css({
                "text-align": t || ""
            })}), t.find("table").addClass("layui-table"), t.find("script,link").remove()}, m = function(t) {
        return t.selection?t.selection.createRange(): t.getSelection().getRangeAt(0)}, p = function(t) {
        return t.endContainer || t.parentElement().childNodes[0]},v=function(t,i,a){var l=this.document,n=document.createElement(t);for(var o in i)n.setAttribute(o,i[o]);if(n.removeAttribute("text"),l.selection){var r=a.text||i.text;if("a"===t&&!r)return;r&&(n.innerHTML=r),a.pasteHTML(e(n).prop("outerHTML")),a.select()}else{var r=a.toString()||i.text;if("a"===t&&!r)return;r&&(n.innerHTML=r),a.deleteContents(),a.insertNode(n)}},h=function(t,i){var a=this.document,l="layedit-tool-active",n=p(m(a)),o=function(e){return t.find(".layedit-tool-"+e)};i&&i[i.hasClass(l)?"removeClass":"addClass"](l),t.find(">i").removeClass(l),o("unlink").addClass(r),e(n).parents().each(function(){var t=this.tagName.toLowerCase(),e=this.style.textAlign;"b"!==t&&"strong"!==t||o("b").addClass(l),"i"!==t&&"em"!==t||o("i").addClass(l),"u"===t&&o("u").addClass(l),"strike"===t&&o("d").addClass(l),"p"===t&&("center"===e?o("center").addClass(l):"right"===e?o("right").addClass(l):o("left").addClass(l)),"a"===t&&(o("link").addClass(l),o("unlink").removeClass(r))})},g=function(t,a,l){var n=t.document,o=e(n.body),c={link:function(i){var a=p(i),l=e(a).parent();b.call(o,{href:l.attr("href"),target:l.attr("target")},function(e){var a=l[0];"A"===a.tagName?a.href=e.url:v.call(t,"a",{target:e.target,href:e.url,text:e.url},i)})},unlink:function(t){n.execCommand("unlink")},face:function(e){x.call(this,function(i){v.call(t,"img",{src:i.src,alt:i.alt},e)})},image:function(a){var n=this;layui.use("upload",function(o){var r=l.uploadImage||{};o.render({url:r.url,method:r.type,elem:e(n).find("input")[0],done:function(e){0==e.code?(e.data=e.data||{},v.call(t,"img",{src:e.data.src,alt:e.data.title},a)):i.msg(e.msg||"上传失败")}})})},sound:function(a){var n=this;layui.use("upload",function(o){var r=l.uploadSound||{};o.render({accept:"audio",acceptMine:"audio/mp3",url:r.url,method:r.type,elem:e(n).find("input")[0],done:function(e){0==e.code?(e.data=e.data||{},  v.call(t, "p", { text: ' <audio src="' + e.data.src + '"  controls="controls" controlsList="nodownload" >您的浏览器不支持audio播放</audio> ' }, a)):i.msg(e.msg||"上传失败")}})})},code:function(e){k.call(o,function(i){v.call(t,"pre",{text:i.code,"lay-lang":i.lang},e)})},help:function(){i.open({type:2,title:"帮助",area:["600px","380px"],shadeClose:!0,shade:.1,skin:"layui-layer-msg",content:["http://www.layui.com/about/layedit/help.html","no"]})}},s=a.find(".layui-layedit-tool"),u=function(){var i=e(this),a=i.attr("layedit-event"),l=i.attr("lay-command");if(!i.hasClass(r)){o.focus();var u=m(n);u.commonAncestorContainer;l?(n.execCommand(l),/justifyLeft|justifyCenter|justifyRight/.test(l)&&n.execCommand("formatBlock",!1,"<p>"),setTimeout(function(){o.focus()},10)):c[a]&&c[a].call(this,u),h.call(t,s,i)}},d=/image/;s.find(">i").on("mousedown",function(){var t=e(this),i=t.attr("layedit-event");d.test(i)||u.call(this)}).on("click",function(){var t=e(this),i=t.attr("layedit-event");d.test(i)&&u.call(this)}),o.on("click",function(){h.call(t,s),i.close(x.index)})},b=function(t,e){var l=this,n=i.open({type:1,id:"LAY_layedit_link",area:"350px",shade:.05,shadeClose:!0,moveType:1,title:"超链接",skin:"layui-layer-msg",content:['<ul class="layui-form" style="margin: 15px;">','<li class="layui-form-item">','<label class="layui-form-label" style="width: 60px;">URL</label>','<div class="layui-input-block" style="margin-left: 90px">','<input name="url" lay-verify="url" value="'+(t.href||"")+'" autofocus="true" autocomplete="off" class="layui-input">',"</div>","</li>",'<li class="layui-form-item">','<label class="layui-form-label" style="width: 60px;">打开方式</label>','<div class="layui-input-block" style="margin-left: 90px">','<input type="radio" name="target" value="_self" class="layui-input" title="当前窗口"'+("_self"!==t.target&&t.target?"":"checked")+">",'<input type="radio" name="target" value="_blank" class="layui-input" title="新窗口" '+("_blank"===t.target?"checked":"")+">","</div>","</li>",'<li class="layui-form-item" style="text-align: center;">','<button type="button" lay-submit lay-filter="layedit-link-yes" class="layui-btn"> 确定 </button>','<button style="margin-left: 20px;" type="button" class="layui-btn layui-btn-primary"> 取消 </button>',"</li>","</ul>"].join(""),success:function(t,n){var o="submit(layedit-link-yes)";a.render("radio"),t.find(".layui-btn-primary").on("click",function(){i.close(n),l.focus()}),a.on(o,function(t){i.close(b.index),e&&e(t.field)})}});b.index=n},x=function(t){var a=function(){var t=["[微笑]","[嘻嘻]","[哈哈]","[可爱]","[可怜]","[挖鼻]","[吃惊]","[害羞]","[挤眼]","[闭嘴]","[鄙视]","[爱你]","[泪]","[偷笑]","[亲亲]","[生病]","[太开心]","[白眼]","[右哼哼]","[左哼哼]","[嘘]","[衰]","[委屈]","[吐]","[哈欠]","[抱抱]","[怒]","[疑问]","[馋嘴]","[拜拜]","[思考]","[汗]","[困]","[睡]","[钱]","[失望]","[酷]","[色]","[哼]","[鼓掌]","[晕]","[悲伤]","[抓狂]","[黑线]","[阴险]","[怒骂]","[互粉]","[心]","[伤心]","[猪头]","[熊猫]","[兔子]","[ok]","[耶]","[good]","[NO]","[赞]","[来]","[弱]","[草泥马]","[神马]","[囧]","[浮云]","[给力]","[围观]","[威武]","[奥特曼]","[礼物]","[钟]","[话筒]","[蜡烛]","[蛋糕]"],e={};return layui.each(t,function(t,i){e[i]=layui.cache.dir+"images/face/"+t+".gif"}),e}();return x.hide=x.hide||function(t){"face"!==e(t.target).attr("layedit-event")&&i.close(x.index)},x.index=i.tips(function(){var t=[];return layui.each(a,function(e,i){t.push('<li title="'+e+'"><img src="'+i+'" alt="'+e+'"></li>')}),'<ul class="layui-clear">'+t.join("")+"</ul>"}(),this,{tips:1,time:0,skin:"layui-box layui-util-face",maxWidth:500,success:function(l,n){l.css({marginTop:-4,marginLeft:-10}).find(".layui-clear>li").on("click",function(){t&&t({src:a[this.title],alt:this.title}),i.close(n)}),e(document).off("click",x.hide).on("click",x.hide)}})},k=function(t){var e=this,l=i.open({type:1,id:"LAY_layedit_code",area:"550px",shade:.05,shadeClose:!0,moveType:1,title:"插入代码",skin:"layui-layer-msg",content:['<ul class="layui-form layui-form-pane" style="margin: 15px;">','<li class="layui-form-item">','<label class="layui-form-label">请选择语言</label>','<div class="layui-input-block">','<select name="lang">','<option value="JavaScript">JavaScript</option>','<option value="HTML">HTML</option>','<option value="CSS">CSS</option>','<option value="Java">Java</option>','<option value="PHP">PHP</option>','<option value="C#">C#</option>','<option value="Python">Python</option>','<option value="Ruby">Ruby</option>','<option value="Go">Go</option>',"</select>","</div>","</li>",'<li class="layui-form-item layui-form-text">','<label class="layui-form-label">代码</label>','<div class="layui-input-block">','<textarea name="code" lay-verify="required" autofocus="true" class="layui-textarea" style="height: 200px;"></textarea>',"</div>","</li>",'<li class="layui-form-item" style="text-align: center;">','<button type="button" lay-submit lay-filter="layedit-code-yes" class="layui-btn"> 确定 </button>','<button style="margin-left: 20px;" type="button" class="layui-btn layui-btn-primary"> 取消 </button>',"</li>","</ul>"].join(""),success:function(l,n){var o="submit(layedit-code-yes)";a.render("select"),l.find(".layui-btn-primary").on("click",function(){i.close(n),e.focus()}),a.on(o,function(e){i.close(k.index),t&&t(e.field)})}});k.index=l},C={html:'<i class="layui-icon layedit-tool-html" title="HTML源代码" lay-command="html" layedit-event="html""></i><span class="layedit-tool-mid"></span>',strong:'<i class="layui-icon layedit-tool-b" title="加粗" lay-command="Bold" layedit-event="b""></i>',italic:'<i class="layui-icon layedit-tool-i" title="斜体" lay-command="italic" layedit-event="i""></i>',underline:'<i class="layui-icon layedit-tool-u" title="下划线" lay-command="underline" layedit-event="u""></i>',del:'<i class="layui-icon layedit-tool-d" title="删除线" lay-command="strikeThrough" layedit-event="d""></i>',"|":'<span class="layedit-tool-mid"></span>',left:'<i class="layui-icon layedit-tool-left" title="左对齐" lay-command="justifyLeft" layedit-event="left""></i>',center:'<i class="layui-icon layedit-tool-center" title="居中对齐" lay-command="justifyCenter" layedit-event="center""></i>',right:'<i class="layui-icon layedit-tool-right" title="右对齐" lay-command="justifyRight" layedit-event="right""></i>',link:'<i class="layui-icon layedit-tool-link" title="插入链接" layedit-event="link""></i>',unlink:'<i class="layui-icon layedit-tool-unlink layui-disabled" title="清除链接" lay-command="unlink" layedit-event="unlink""></i>',face:'<i class="layui-icon layedit-tool-face" title="表情" layedit-event="face""></i>',image:'<i class="layui-icon layedit-tool-image" title="图片" layedit-event="image"><input type="file" name="file"></i>',sound:'<i class="layui-icon layedit-tool-image" title="插入音频" layedit-event="sound"><input type="file" accept="audio/mp3" name="file"></i>',code:'<i class="layui-icon layedit-tool-code" title="插入代码" layedit-event="code"></i>',help:'<i class="layui-icon layedit-tool-help" title="帮助" layedit-event="help"></i>'},w=new c;t(n,w)});