커서위치에 글자 삽입 스크립트

function insertAtCursor(areaId,text)

{

    var txtarea = document.getElementById(areaId);

    var scrollPos = txtarea.scrollTop;

    var strPos = 0;

    var br = ((txtarea.selectionStart || txtarea.selectionStart == '0') ?

        "ff" : (document.selection ? "ie" : false ) );

    if (br == "ie") {

        txtarea.focus();

        var range = document.selection.createRange();

        range.moveStart ('character', -txtarea.value.length);

        strPos = range.text.length;

    }

    else if (br == "ff") strPos = txtarea.selectionStart;

 

    var front = (txtarea.value).substring(0,strPos);

    var back = (txtarea.value).substring(strPos,txtarea.value.length);

    txtarea.value=front+text+back;

    strPos = strPos + text.length;

    if (br == "ie") {

        txtarea.focus();

        var range = document.selection.createRange();

        range.moveStart ('character', -txtarea.value.length);

        range.moveStart ('character', strPos);

        range.moveEnd ('character', 0);

        range.select();

    }

    else if (br == "ff") {

        txtarea.selectionStart = strPos;

        txtarea.selectionEnd = strPos;

        txtarea.focus();

    }

    txtarea.scrollTop = scrollPos;

}




[출처] stackoverflow