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Capture ctrl+s to update the value

To achieve this, we need to bind the keydown event to the RichTextEditor content and capture the ctrl + s key press using its keyCode. In the keydown event handler, the updateValue method is called to update the value property and then we can save the content in the required database using the same.

Source
Preview
app.vue
<template>
<div>
<div class="control-section">
    <div class="sample-container">
        <div class="default-section">
        <ejs-richtexteditor ref="rteObj" :toolbarSettings="toolbarSettings" :created="onCreate"><p>The rich text editor component is WYSIWYG ("what you see is what you get") editor that provides the best user experience to create and update the content. Users can format their content using standard toolbar commands.</p>
        <p><b>Key features:</b></p>
          <ul>
            <li><p>Provides IFRAME and DIV modes</p></li>
            <li><p>Capable of handling markdown editing.</p></li>
            <li><p>Contains a modular library to load the necessary functionality on demand.</p></li>
            <li><p>Provides a fully customizable toolbar.</p></li>
          </ul></ejs-richtexteditor>
        </div>
    </div>
</div>

</div>
</template>
<script>
import Vue from "vue";
import { RichTextEditorPlugin, Toolbar, HtmlEditor } from "@syncfusion/ej2-vue-richtexteditor";

Vue.use(RichTextEditorPlugin);

export default {
     data: function() {
        return {
        toolbarSettings: {
            type: 'MultiRow',
            items: ['Bold', 'Italic', 'Underline', 'StrikeThrough',
            'FontName', 'FontSize', 'FontColor', 'BackgroundColor',
            'LowerCase', 'UpperCase', '|',
            'Formats', 'Alignments', 'OrderedList', 'UnorderedList',
            'Outdent', 'Indent', '|',
            'CreateLink', 'Image', '|', 'ClearFormat', 'Print',
            'SourceCode', 'FullScreen', '|', 'Undo', 'Redo'
          ]
        },
        }
    },
    methods: {
    onCreate: function(){
      var instance = this.$refs.rteObj.$el.ej2_instances[0];
      instance.contentModule.getDocument().addEventListener("keydown",function(e: any):void{
            if(e.key === 's' && e.ctrlKey===true){
                  e.preventDefault(); // to prevent default ctrl+s action
                  instance.updateValue(); // to update the value after editing
                  let value: any= instance.value; // you can get the RTE content to save in the desired database
            }

      });
    }
    },
    provide:{
        richtexteditor:[Toolbar, HtmlEditor]
    }
}
</script>
<style>
  @import "../../node_modules/@syncfusion/ej2-vue-richtexteditor/styles/material.css";
</style>