获取div编辑框，textarea，input text的光标位置 兼容IE，FF和Chrome的
2024-05-06 14:20:59
供稿：网友
网上苦找2小时，全是不能兼容FF的，看来这种东西网上是搞不到现成的了，只能自己动手丰衣足食
现在发布出来，今后网上就有现成的供人使用了。
为了省事，少量位置用了jquery 改原生JS也很方便，谁需要就请自己修改了。
欢迎各位路过高人拍板，欢迎各位留言提供改进代码。
又改进 兼容了Chrome 下面的代码已修改成最新版
上源码了
代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>js获取div编辑框，textarea，input text的光标位置，兼容FF和IE</title>
<script src="jquery-1.4.4.js" type="text/javascript"></script>
<script type="text/javascript">
//去除左右所有空格
String.prototype.trim = function () {
return this.replace(/(^/s*)|(/s*$)/g, "");
}
function getPosition(element) {
var OsObject = "";
if (navigator.userAgent.indexOf("MSIE") > 0) {
OsObject = "MSIE";
}
if (navigator.userAgent.indexOf("Firefox") > 0) {
OsObject = "Firefox";
}
if (navigator.userAgent.indexOf("Safari") > 0) {
OsObject = "Safari";
}
if (navigator.userAgent.indexOf("Camino") > 0) {
OsObject = "Camino";
}
if (navigator.userAgent.indexOf("Gecko") > 0) {
OsObject = "Gecko";
}
if (navigator.userAgent.indexOf("Chrome") > 0) {
OsObject = "Chrome";
}
var result = 0;
if (!document.selection) { //非IE浏览器
var thisTagName = null;
if ($(element).attr("tagName") != "TEXTAREA" && $(element).attr("tagName") != "INPUT") {
if ($(element).attr("tagName") == "DIV" && $(element).attr("contenteditable") == "true") {
thisTagName = window.getSelection().anchorNode.parentElement.tagName;
} //出自http://www.cnblogs.com/ahjesus 尊重作者辛苦劳动成果，转载请注明出处，谢谢！
else {
thisTagName == null;
}
}
else {
if ($(element).attr("tagName") == "INPUT" && $(element).attr("type") == "text") {
thisTagName = window.getSelection().anchorNode.tagName;
}
else {
console.log(window.getSelection());
thisTagName = window.getSelection().anchorNode.tagName;
}
}
console.log(thisTagName);
if (thisTagName == "TEXTAREA" || thisTagName == "INPUT" || (thisTagName=="BODY"&&OsObject == "Chrome")) {
result = element.selectionStart
} //出自http://www.cnblogs.com/ahjesus 尊重作者辛苦劳动成果，转载请注明出处，谢谢！
else if (thisTagName != null) {
if (thisTagName == element.tagName) {
if (window.getSelection().anchorNode.textContent == $(element).text()) {
result = window.getSelection().anchorOffset;
}
else {
var currentIndex = window.getSelection().anchorOffset;
var txt = "";
var txtoo = window.getSelection().anchorNode.previousSibling;
