两种实现光标点插入range

一、insertNode

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .edit {
            width: 400px;
            height: 140px;
            border: 2px solid #ff7f50;
            overflow: auto
        }
    </style>
</head>

<body>
    <div class="emoji-container">

    </div>
    <div class="edit" contenteditable="true">

    </div>
    <script>
        const arr = ['

两种实现光标点插入range

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