JS里在光标位置插入字符
<script language=Javascript>function AddOnPos(obj, charvalue){ //obj代表要插入字符的输入框 //value代表要插入的字符 obj.focus(); var r = document.selection.createRange(); var ctr = obj.createTextRange(); var i; var s = obj.value; //注释掉的这种方法只能用在单行的输入框input内 //对多行输入框textarea无效 //r.setEndPoint("StartToStart", ctr); //i = r.text.length; //取到光标位置----Start---- var ivalue = "&^asdjfls2FFFF325%$^&"; r.text = ivalue; i = obj.value.indexOf(ivalue); r.moveStart("character", -ivalue.length); r.text = ""; //取到光标位置----End---- //插入字符 obj.value = s.substr(0,i) + charvalue + s.substr(i,s.length); ctr.collapse(true); ctr.moveStart("character", i + charvalue.length); ctr.select();}</script>