保护源码

protect.js

<script type="text/javascript">
    document.onkeydown = function(){

        if(window.event && window.event.keyCode == 123) {
            alert("F12 is blocked");
            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;
        }
         if ((window.event && window.event.keyCode == 83) ) { //ctrl+s
            alert("ctrl+s被禁用");
            return false;
        }
    }

    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;
        }
    }

    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;
        }
    }

    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;
        }
    }

    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;
        }
    }

// 或者替换为以下语句说明版权
//     document.body.addEventListener('copy', function(e) {
//         if (window.getSelection().toString() && window.getSelection().toString().length > 0) {
//             setClipboardText(e);
//             alert('复制成功!');
//         }
//     });
//     function setClipboardText(event) {
//         var clipboardData = event.clipboardData || window.clipboardData;
//         if (clipboardData) {
//             event.preventDefault();
//         var htmlData = ''
//                     + '著作权归作者所有。<br>'
//                     + '商业转载请联系作者获得授权，非商业转载请注明出处。<br>'
//                     + '作者：<?php $this->author() ?><br>'
//                     + '链接：' + window.location.href + '<br>'
//                     + '来源：<?php $this->options->siteUrl(); ?><br><br>'
//                     + window.getSelection().toString();
//        var textData = ''
//             + '著作权归作者所有。\n'
//             + '商业转载请联系作者获得授权，非商业转载请注明出处。\n'
//             + '作者：<?php $this->author() ?>\n'
//             + '链接：' + window.location.href + '\n'
//             + '来源：<?php $this->options->siteUrl(); ?>\n\n'
//             + window.getSelection().toString();
//             clipboardData.setData('text/html', htmlData);
//             clipboardData.setData('text/plain', textData);
//         }
//     }

</script>