JS 对文本框指定焦点差入值

Posted 2020-09-26

参考文章：http://www.111cn.net/wy/js-ajax/52270.htm

这种方法可行。

通过上面的我们就可以将DIV中的光标移动到最后面了

一个完整的实例

代码如下

复制代码

<button type=”button” onclick=”document.getElementById(‘test’).focus(); inserthtmlAtCaret(‘<b>INSERTED</b>’);”>插入字符</button> <div contentEditable=”true” style=”height:50px; border:2px solid red;” id=”test”>&nbsp;</div>   function insertHtmlAtCaret(html) { var sel, range; if (window.getSelection) { // IE9 and non-IE sel = window.getSelection(); if (sel.getRangeAt && sel.rangeCount) { range = sel.getRangeAt(0); range.deleteContents(); // Range.createContextualFragment() would be useful here but is // non-standard and not supported in all browsers (IE9, for one) var el = document.createElement(“div”); el.innerHTML = html; var frag = document.createDocumentFragment(), node, lastNode; while ( (node = el.firstChild) ) { lastNode = frag.appendChild(node); } range.insertNode(frag); // Preserve the selection if (lastNode) { range = range.cloneRange(); range.setStartAfter(lastNode); range.collapse(true); sel.removeAllRanges(); sel.addRange(range); } } } else if (document.selection && document.selection.type != “Control”) { // IE < 9 document.selection.createRange().pasteHTML(html); } }

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