相关疑难解决方法(0)

当我尝试使用范围时，我在控制台中收到此错误：

Uncaught IndexSizeError: Failed to execute 'setEnd' on 'Range': The offset 2 is larger than or equal to the node's length (0).

这是我的脚本：

<script type="text/javascript">
    function gotMark() {
        var range = document.createRange();
        var startNode = document.getElementById("dividTeste1").firstChild;

        range.setStart(startNode, 0);
        range.setEnd(startNode, 2);

        var newNode = document.createElement("span");
        range.surroundContents(newNode);
    }
</script>

和页面：

<div class="ui-block-a" id="divid" value="div1">
    <div style="background-color: black; color: white; padding: 20px;" id="divid2">
        <h2>London</h2>
        <p id="dividTeste1">London is the capital city of England. It is the most
            populous city in the United Kingdom, with …