Web JavaScript 防调试

屏蔽键盘按键

屏蔽F12

• 禁用F12，并弹出提示框

//只屏蔽F12 并提示
document.onkeydown = function(){
  if(window.event && window.event.keyCode == 123) {
    alert("F12被禁用");
    event.keyCode=0;
    event.returnValue=false;
  }
  if(window.event && window.event.keyCode == 13) {
    window.event.keyCode = 505;
  }
  if(window.event && window.event.keyCode == 8) {
    alert(str+"\n请使用Del键进行字符的删除操作！");
    window.event.returnValue=false;
  }
}

• 按F12跳转指定页面

//按住F12空白页面或跳转其他页面
document.onkeydown = function(){
  
  if(window.event && window.event.keyCode == 123) {
    window.location="about:blank"; //将当前窗口跳转置空白页
    event.keyCode=0;
    event.returnValue=false;
  }
  if(window.event && window.event.keyCode == 13) {
    window.event.keyCode = 505;
  }
  if(window.event && window.event.keyCode == 8) {
    alert(str+"\n请使用Del键进行字符的删除操作！");
    window.event.returnValue=false;
  }

}

禁止唤起控制台

$(document).ready(function () {
      document.oncontextmenu = function () {
        return false;
      }
      //document.onselectstart = function () {
       // return false;
     // }
      //document.oncopy = function () {
        //return false;
     // }
      document.onkeydown = function () {
        //f12
        if (window.event && window.event.keyCode == 123) {
          event.keyCode = 0;
          event.returnValue = false;
          layer.msg("别看代码了=.=")
          return false;
        }
        //ctrl+u
        if (event.ctrlKey && window.event.keyCode == 85) {
          return false;
        }
        //ctrl+shift+i
        if ((event.ctrlKey) && (event.shiftKey) && (event.keyCode == 73)) {
          return false;
        }
        // Ctrl+S
        else if ((event.ctrlKey) && (event.keyCode == 83)) {
          return false;
        }
      };

    });

禁止键盘事件

//禁止任何键盘敲击事件 
    window.onkeydown = window.onkeyup = window.onkeypress = function () { 
        window.event.returnValue = false; 
        return false; 
    }

屏蔽鼠标操作

禁用右键

//禁用右键（防止右键查看源代码） 
    window.oncontextmenu=function(){return false;}

• 同上

//屏蔽右键菜单
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;
}
}

屏蔽粘贴

//屏蔽粘贴
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;
}
}

屏蔽复制

//屏蔽复制
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;
}
}

屏蔽剪切

//屏蔽剪切
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;
}
}

屏蔽选中

//屏蔽选中
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;
}
}

同时禁右键和F12

//禁右键和F12
document.oncontextmenu=new Function("event.returnValue=false;"); 
    document.onkeydown=MM_KeyPress;
    function  MM_KeyPress(num){
        var keycODe = event.keyCODe;
        if(keycode ==8)
        {
            event.keyCode = 0;
            return;
        }
        if(keycode >=122 && keycode <=123)
        {
            event.keyCode = 0 ;
            event.returnValue=false;
            return;
        }
    }
    function gg(){
    layer.alert(' ', {
  icon: 1,
  skin: 'layer-ext-moon'
})
}
function click(e) {
if (document.all) {
if (event.button==2||event.button==3) { 
oncontextmenu='return false';
}
}
if (document.layers) {
if (e.which == 3) {
oncontextmenu='return false';
}
}
}
if (document.layers) {
document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;
document.oncontextmenu = new Function("return false;")
document.onkeydown =document.onkeyup = document.onkeypress=function(){
if(window.event.keyCode == 123) {
window.event.returnValue=false;
return(false);
}
}

控制台debugger

• 禁止调试，并显示提示

(function noDebuger(){
    function testDebuger(){
        var d=new Date();
        debugger;
        if(new Date()-d>10){
            document.body.innerHTML='<div>年轻人，不要太好奇</div>';
            return true;
        }
        return false;
    }
 
    function start(){
        while(testDebuger()){
            testDebuger();
        }
    }
    if(!testDebuger()) {
        window.onblur = function(){
            setTimeout(function(){
                start();
            },500)
        }
    }
    else{
        start();
    }
 
})();

• 检测调试跳转指定地址

//检测到打开调试跳转指定地址
(() => {
function block() {
if (
window.outerHeight - window.innerHeight > 200 ||
window.outerWidth - window.innerWidth > 200
) {
window.location = "网址";
}
setInterval(() => {
(function () {
return false;
}
["constructor"]("debugger")
["call"]());
}, 50);
}
try {
block();
} catch (err) {}
})();

• 打开调试，debugger

//js检测开发者工具Devtools是否打开防调试,中断调试
setInterval(function() {
  check()
}, 4000);
var check = function() {
  function doCheck(a) {
    if (("" + a/a)["length"] !== 1 || a % 20 === 0) {
      (function() {}
      ["constructor"]("debugger")())
    } else {
      (function() {}
      ["constructor"]("debugger")())
    }
    doCheck(++a)
  } 
  try {
    doCheck(0)
  } catch (err) {}
};
check();

• 同上

if(window.location.href.indexOf('#debug')==-1){
  setInterval(function(){
    (function (a) {return (function (a) {return (Function('Function(arguments[0]+"' + a + '")()'))})(a)})('bugger')('de', 0, 0, (0, 0));
  }, 1000);
}

• 禁右键和F12并提示，debugger

function t() {
    var r = "V",
        n = "5",
        e = "8";
 
    function o(r) {
        if (!r) return "";
        for (var t = "", n = 44106, e = 0; e < r.length; e++) {
            var o = r.charCodeAt(e) ^ n;
            n = n * e % 256 + 2333, t += String.fromCharCode(o)
        }
        return t
    }
    try {
        var a = ["r", o("갯"), "g", o("갭"), function (t) {
            if (!t) return "";
            for (var o = "", a = r + n + e + "7", c = 45860, f = 0; f < t.length; f++) {
                var i = t.charCodeAt(f);
                c = (c + 1) % a.length, i ^= a.charCodeAt(c), o += String.fromCharCode(i)
            }
            return o
        }("@"), "b", "e", "d"].reverse().join("");
        ! function c(r) {
            (1 !== ("" + r / r).length || 0 === r) && function () {}.constructor(a)(), c(++r)
        }(0)
    } catch (a) {
        setTimeout(t, 100);
    }
}
t();
document.onkeydown = function() {
    if ((e.ctrlKey) && (e.keyCode == 83)) {
        alert("CTRL + S 被管理员禁用");
        return false;
    }
}
document.onkeydown = function() {
    var e = window.event || arguments[0];
    if (e.keyCode == 123) {
        alert("F12 被管理员禁用");
        return false;
    }
}
document.oncontextmenu = function() {
    alert('右键被管理员禁用');
    return false;
}