<!DOCTYPE html> <html> <head> <title></title> <meta charset="utf-8"> </head> <body> <input type="button" onclick="moveEnd(document.getElementById('text'))" value="移到倒数第二位"> <textarea id="text"></textarea> <script type="text/javascript"> /*function insertText(obj,str) { if (document.selection) { var sel = document.selection.createRange(); sel.text = str; } else if (typeof obj.selectionStart === 'number' && typeof obj.selectionEnd === 'number') { var startPos = obj.selectionStart, endPos = obj.selectionEnd, cursorPos = startPos, tmpStr = obj.value; obj.value = tmpStr.substring(0, startPos) + str + tmpStr.substring(endPos, tmpStr.length); cursorPos += str.length; obj.selectionStart = obj.selectionEnd = cursorPos; } else { obj.value += str; } } */ function moveEnd(obj){ obj.focus(); var len = obj.value.length; if (document.selection) { var sel = obj.createTextRange(); sel.moveStart('character',len-1); sel.collapse(); sel.select(); } else if (typeof obj.selectionStart == 'number' && typeof obj.selectionEnd == 'number') { obj.selectionStart = obj.selectionEnd = len-1; } } </script> </body> </html>