Click a button to insert content based on the cursor position

1. The final effect is as follows

2. Implementation code

<template>
  <div
    ref="selectionRef1"
    id="selection-container"
    class="selection-container"
    contenteditable="true"
    >请在此处输入内容</div
  >
  <div
    ref="selectionRef2"
    id="selection-container2"
    class="selection-container selection-container-box"
    contenteditable="true"
    >第二个输入地区</div
  >
  <button class="btn" @click="handleOneFn">插入文案1</button>
  <button class="btn" @click="handleTwoFn">插入文案2</button>
  <button @click="handleGetOne">获取内容1</button>
  <button @click="handleGetTwo">获取内容2</button>
</template>
<script>
  import {
    
     ref } from 'vue';
  import SelectionFn from './selection';
  export default {
    
    
    setup() {
    
    
      const selectionRef1 = ref(null);
      const selectionRef2 = ref(null);
      const {
    
     handleToLast: handleOneFn, handleGetContent: handleGetOne } = SelectionFn(
        selectionRef1,
        '#插入文案1#',
      );
      const {
    
     handleToLast: handleTwoFn, handleGetContent: handleGetTwo } = SelectionFn(
        selectionRef2,
        '#插入文案2#',
      );
      return {
    
    
        selectionRef1,
        selectionRef2,
        handleOneFn,
        handleTwoFn,
        handleGetOne,
        handleGetTwo,
      };
    },
  };
</script>
<style lang="less" scoped>
  .selection-container {
    
    
    width: 300px;
    height: 100px;
    overflow: auto;
    background: #ddd;

    &-box {
    
    
      background: pink;
    }
  }

  .btn {
    
    
    width: 100px;
    height: 44px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #ccc;
  }
</style>
<style>
  .insert-text {
    
    
    color: red;
    cursor: initial;
  }

  .insert-text:hover {
    
    
    color: red;
  }
</style>

selection.jscode

const useSelection = (currentRef, insertText) => {
    
    
  return {
    
    
    handleToLast: () => {
    
    
      currentRef.value.focus();
      const sel = window.getSelection();
      if (!sel.anchorNode) {
    
    
        currentRef.value.focus();
      }
      const range = sel.getRangeAt(0);
      const str = '<a href="#" class="insert-text">' + insertText + '</a>';
      const hasR = range.createContextualFragment(str);
      range.insertNode(hasR);
      sel.removeAllRanges();
      sel.addRange(range);
      range.collapse(false);
    },

    handleGetContent: () => {
    
    
      const res = currentRef.value.innerHTML;
      console.log('res,', res);
    },
  };
};

export default useSelection;