html 富文本编辑器相关--输出选中文字和主动选择文字 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div class="app" contenteditable="true">
    <span id="content">12345675345</span>
    <p id="content2">12345675345</p>
</div>

<button id="btn">显示选中文字</button>
</body>
<script>
    selction = window.getSelection();
    const btn = document.querySelector('#btn');
    const app = document.querySelector('.app');
    const content = document.querySelector('#content');
    const content2 = document.querySelector('#content2');
    app.focus();
    btn.onclick = function () {
        let selction ,text;
        console.log(selction.toString());//输出选中文字
        alert(selction);
    }
    let range = selction.getRangeAt(0);
    range.setStart(selction.anchorNode,selction.anchorOffset);
    range.setEnd(selction.focusNode,selction.focusOffset+6);
    selction.removeAllRanges();
    selction.addRange(range);//主动添加选中文字
    console.log(selction);

</script>
</html>
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posted @ 2017-04-13 20:28  _白马非马  阅读(368)  评论(0)    收藏  举报