JS 차단 버튼 (복사, 붙 여 넣 기, 선택, 잘라 내기, F12 등 포함)

window.onload = function () {
        
        //  F12
        $("*").keydown(function (e) {//    
            e = window.event || e || e.which;
            if (e.keyCode == 123) {
                e.keyCode = 0;
                return false;
            }
        });
        
        //      
        $(document).bind("contextmenu",function(e){
            return false;
        });
    };

document.oncontextmenu = function (event){
if(window.event){
    event = window.event;
}try{
    var the = event.srcElement;
    if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
        return false;
    }
    return true;
}catch (e){
    return false;
}
}

document.onpaste = function (event){
if(window.event){
event = window.event;
}
try{
    var the = event.srcElement;
    if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
        return false;
    }
    return true;
}catch (e){
    return false;
}
}

document.oncopy = function (event){
if(window.event){
event = window.event;
}
try{
    var the = event.srcElement;
    if(!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
        return false;
    }
    return true;
}catch (e){
    return false;
}
}

document.oncut = function (event){
if(window.event){
event = window.event;
}
try{
    var the = event.srcElement;
    if(!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
        return false;
    }
    return true;
}catch (e){
    return false;
}
}

document.onselectstart = function (event){
if(window.event){
    event = window.event;
}
try{
    var the = event.srcElement;
    if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){
        return false;
     }
    return true;
} catch (e) {
    return false;
 }
}