日期:2014-05-16 浏览次数:20531 次
<html> <head> <script language="javascript"> function getCursortPosition (ctrl) {//获取光标位置函数 var CaretPos = 0; // IE Support if (document.selection) { ctrl.focus (); var Sel = document.selection.createRange (); Sel.moveStart ('character', -ctrl.value.length); CaretPos = Sel.text.length; } // Firefox support else if (ctrl.selectionStart || ctrl.selectionStart == '0') CaretPos = ctrl.selectionStart; return (CaretPos); } function setCaretPosition(ctrl, pos){//设置光标位置函数 if(ctrl.setSelectionRange) { ctrl.focus(); ctrl.setSelectionRange(pos,pos); } else if (ctrl.createTextRange) { var range = ctrl.createTextRange(); range.collapse(true); range.moveEnd('character', pos); range.moveStart('character', pos); range.select(); } } function A(){ alert(getCursortPosition(document.getElementById("a"))); } function B() { setCaretPosition(document.getElementById("a"),5); } </script> </head> <body> <input id="a" type=text name=text1 value="" > <button onclick="A();">获取</bottun> <button onclick="B();">设置</bottun> </body> </html>
onkeyup ="LowerToUpper(this,event.keyCode);"
//小写转大写 function LowerToUpper(element,keyCode) { if ((keyCode > 40 || keyCode < 35) && keyCode != 8) { var pos = getCursortPosition(element); element.value = element.value.toUpperCase(); setCaretPosition(element, pos); } }