前端:屏蔽F12审查元素,禁止修改页面代码
注入恶意JS等等,这种情况避免也不难,虽然还能看到一部分H5源码,但是无法修改
一、屏蔽F12 审查元素
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+" 请使用Del键进行字符的删除操作!");
window.event.returnValue=false;
}
}
除了屏蔽这个,我们还有其他有趣的设置:
二、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;
}
}
三、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;
}
}
四、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;
}
}
五、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;
}
}
这种很适合小说网站,毕竟版权珍贵,被别人随意copy走内容就不好了
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;
}
}
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-
(function() {
-
function R(a) {
-
let ona = "on" + a;
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if (window.addEventListener){
-
window.addEventListener(a, function(e) {
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for (let n = e.originalTarget; n; n = n.parentNode) n[ona] = null;
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}, true);
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}
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window[ona] = null;
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document[ona] = null;
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if (document.body) document.body[ona] = null;
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}
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R("contextmenu");
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R("click");
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R("mousedown");
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R("mouseup");
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R("paste");
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R("cut");
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R("copy");
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R("selectstart");
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})()