7

Firefox 3 可以使用 JS 选择多个文本区域。有没有办法在 Chrome 和 IE 中做到这一点?

我真的试图找到一种在 Chrome 和 IE9 的网页中选择多个文本区域的方法。


信息在: http ://help.dottoro.com/ljxsqnoi.php


示例:http: //jsfiddle.net/t3sWz/


仅编码 FireFox3.5+...(但这是问题所在):

<html>

<head>
    <meta charset="UTF-8">
    <style>
        #trigger { background: yellow }
    </style>
</head>

<body>
    <p id="test">
        This is some text you can highlight by dragging or clicking below.
    </p>
    <span id="trigger">
        Click here to select "This" and "some"
    </span>
    <a> - Firefox only :-(</a>
    <br>
    <br>
    <br>
    <br>
    <br>
    <input type="button" value="Get selection" onmousedown="getSelText()">
    <form name=aform>
        <textarea name="selectedtext" rows="5" cols="20">
        </textarea>
    </form>
    <script>
        var testCase = function() {
            var userSelection;

            if (window.getSelection) {
                userSelection = window.getSelection();
            } // No support for IE
            var textNode = document.getElementById('test').firstChild;
            var theRange = document.createRange();

            // select 0th–4th character
            theRange.setStart(textNode, 0);
            theRange.setEnd(textNode, 4);

            // set user selection    
            userSelection.addRange(theRange);

            var textNode = document.getElementById('test').firstChild;
            var theRange = document.createRange();

            // select 8th–12th character
            theRange.setStart(textNode, 8);
            theRange.setEnd(textNode, 12);

            // set user selection    
            userSelection.addRange(theRange);
        };

        window.onload = function() {
            var el = document.getElementById('trigger');
            el.onclick = testCase;
        };

        function getSelText() {
            var txt = '';
            if (window.getSelection) {
                txt = window.getSelection();
            } else if (document.getSelection) {
                txt = document.getSelection();
            } else if (document.selection) {
                txt = document.selection.createRange().text;
            } else
            return;
            document.aform.selectedtext.value = txt;
        }
    </script>
</body>

4

1 回答 1

6

不会。在主流浏览器中,只有 Firefox 支持用户选择范围内的多个范围。其他浏览器(WebKit、Opera、IE9)确实具有Selection支持多个范围的 API,但目前不支持。WebKit显然不打算在短期内增加支持。至于Opera和IE,我不知道。

于 2011-02-13T16:40:36.897 回答