防止网页被审查元素JS代码，可以防止一般用户在网页上审查元素

<script type="text/javascript">

  window.onkeydown = window.onkeyup = window.onkeypress = function (event) {  

    // 判断是否按下F12，F12键码为123  

    if (event.keyCode == 123) {  

        event.preventDefault(); // 阻止默认事件行为  

        window.event.returnValue = false;  

    }  

}  

 

var threshold = 160; // 打开控制台的宽或高阈值  

// 每秒检查一次  

window.setInterval(function() {  

    if (window.outerWidth - window.innerWidth > threshold ||   

    window.outerHeight - window.innerHeight > threshold) {  

        // 如果打开控制台，则刷新页面  

        window.location.reload();  

    }  

}, 1e3);  

</script>

<script type="text/javascript">

function click(e) {

if (document.all) {

if (event.button==2||event.button==3) { alert("魔趣建站禁止操作");

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); 

} 

}

</script>