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+"\n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
六、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;
}
}

本文转载于：https://blog.csdn.net/ssh159/article/details/79159091