tinymce添加自定义快捷键，ctrl+s保存

tinymce在初始化完成时，可添加回调函数，在回调里添加多个自定义快捷键函数

        tinymce.init({
            selector: '#articleContent',
            language: 'zh_CN',
            plugins: 'print preview searchreplace autolink directionality visualblocks visualchars fullscreen image link media template advcode codesample table charmap hr pagebreak nonbreaking anchor insertdatetime advlist lists wordcount imagetools textpattern help emoticons autosave bdmap indent2em autoresize formatpainter axupimgs importword kityformula-editor',
            toolbar: 'removeformat forecolor backcolor bold underline | alignleft aligncenter alignright charmap kityformula-editor | 
		  bullist numlist | subscript superscript image | 
		 table  media   hr pagebreak insertdatetime indent2em lineheight  | code-sample formatselect code preview',
            min_height: 600,
            autosave_ask_before_unload: false,
            automatic_uploads: false,
            images_upload_base_path: '/demo',
            images_upload_handler: function (blobInfo, succFun, failFun) {
                succFun('/demo/images/img.jpg');
            },
            mobile: {
                menubar: true
            },
            init_instance_callback: function (editor) {
              editor.shortcuts.add("ctrl+s", "save", function() { //可多个初始化回调
                vm.submit();
              })  
            }
        });