前言

自己辛苦做的网站，著作权归作者所有。为避免被他人窃取并进行商业化，就需要把网站进一步限制

禁用F12、禁用调试工具、屏蔽右键菜单、屏蔽选中、屏蔽复制、屏蔽剪贴、屏蔽粘贴

屏蔽及禁用代码

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/**
 * 禁用F12
 * @type {Window.onkeypress}
 */
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;
    }
}

/**
 * 禁用调试工具
 * @type {number}
 */
var threshold = 160; // 打开控制台的宽或高阈值
// 每秒检查一次
var check = 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();
    }
}, 1000)

/**
 * 屏蔽右键菜单
 * @param event
 * @returns {boolean}
 */
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;
    }
}

/**
 * 屏蔽选中
 * @param event
 * @returns {boolean}
 */
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;
    }
}

/**
 * 屏蔽复制
 * @param event
 * @returns {boolean}
 */
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;
    }
}

/**
 * 屏蔽剪贴
 * @param event
 * @returns {boolean}
 */
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;
    }
}

/**
 * 屏蔽粘贴
 * @param event
 * @returns {boolean}
 */
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;
    }
}

温馨提示

  1. 关于屏蔽选中文字，搭配下面这段css更具有奇效
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    <style>
      /* 文字禁止选中 */
      #footer, #header {
          -webkit-user-select:none;
          -moz-user-select:none;
          -ms-user-select:none;
          user-select:none;
      }
    </style>