$.fn.extend({
setCaretPosition : function(pos) { // 设置光标
var ctrl = this[0];
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();
}
},
getCursortPosition : function() { // 获取光标
var CaretPos = 0; // IE Support
var ctrl = this[0];
if (document.selection) {
ctrl.focus();
var Sel = document.selection.createRange();
Sel.moveStart('character', -ctrl.value.length);
CaretPos = Sel.text.length;
} else if (ctrl.selectionStart || ctrl.selectionStart == '0') { // FF
// Support
CaretPos = ctrl.selectionStart;
return (CaretPos);
}
}
});