js setting prohibits browser refresh, right click and F5 key

Disable F5 refresh:

$(document).bind("keydown", function(e) {
    e = window.event || e;//解决浏览器兼容的问题   
    if(e.keyCode == 116) {//F5按下
    　　e.keyCode = 0;
    　　return false;
    }else{
    　　//刷新
    }
});

Disable the right button and F5 key directly:

document.oncontextmenu=function(){return false;}

document.onkeydown=function(event){
        var e = event ||window.event || arguments.callee.caller.arguments[0];
        if(e && e.keyCode==116){
            return false;
        }
}