日期:2014-05-16 浏览次数:20273 次
<!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> <meta http-equiv="Content-Type" content="text/html; charset=GBK" /> <title>js获取光标位置</title> <script type="text/javascript"> /** * 获取光标所在的字符位置 * @param obj 要处理的控件, 支持文本域和输入框 * @author hotleave */ function getPosition(obj){ //alert(obj.tagName); var result = 0; if(obj.selectionStart){ //非IE浏览器 result = obj.selectionStart }else{ //IE var rng; if(obj.tagName == "TEXTAREA"){ //如果是文本域 rng = event.srcElement.createTextRange(); rng.moveToPoint(event.x,event.y); }else{ //输入框 rng = document.selection.createRange(); } rng.moveStart("character",-event.srcElement.value.length); result = rng.text.length; } return result; } function getValue(obj){ var pos = getPosition(obj); //alert(pos); alert(obj.value.substr(0,pos)+" [这里是添加的内容] "+obj.value.substr(pos,obj.value.length)); } </script> </head> <body> <input type="text" value="你好,Amethyst!" onmouseup="getValue(this)" style="display:block"> <textarea rows="6" cols="60" onmouseup="getValue(this)">Amethyst, 你好.</textarea> </body> </html>
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http://blog.163.com/flying_heart/blog/static/9811907620093134156646/
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http://blog.csdn.net/pillar0514/article/details/6653666
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http://blog.csdn.net/pillar0514/article/details/6653666
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http://www.xuanqi8.com/userlist/admin/newshow-959.html看看能不能帮到吧。
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jCaret plugin
http://archive.plugins.jquery.com/project/jCaret