如何在iframe中获取字符偏移？

Question

$(document).ready(function () {
    $('#textEditor').contents().keypress(function (e) {
        if (e.which == 35) {
            alert('# pressed');
            //How to get '#' character offset relative to an iframe
        }
        return true;
    });

#textEditor是我在代码中使用的iframe的ID

编辑：以xy坐标偏移，而不是以iframe开头的字符数偏移

提前致谢。

Answer 1

var selection = window.getSelection();
var range = selection.getRangeAt(0);
console.log(range.getBoundingClientRect()); // left, top, height, width