切图仔的自嗨

复制以下代码,在开发者工具的console里运行。
原地址:https://juejin.cn/post/7416664040401600539

'use strict';
    const targetNodeObject = document.body;
    const styleElement = document.createElement('style');
    const floatBall = document.createElement('div');
    let center = { centerX: 0, centerY: 0 };
    const timer = 32;
    styleElement.textContent = `
          .highlighted-text {
            width: 4px;
            height: 4px;
            margin: 0 2px;
            display: inline-block;
            overflow: hidden;
            background-color: #f00;
            transition: all 1s;
          }
          .highlighted-image {
            margin: 0 2px !important;
            display: inline-block !important;
            overflow: hidden !important;
            background-color: #000 !important;
            transition: all 1s;
            transform-origin: center top;
          }
          .floating-ball {
            width: 4px;
            position:fixed;
            height: 100px;
            background: #000 !important;
            animation: floatAnimation 0.2s linear infinite;
            left: 50%;
            top: -800px;
            transition: top 1s ease;
            z-index:9999;
            border:1px solid #fff;
            transform-origin: center center;
          }
          @keyframes floatAnimation {
            to {
              transform: rotate(360deg);
            }
          }
          .inhaleAnimation{
            position: fixed;
            z-index:9999;
            animation: inhaleAnimation 2s ease-out forwards;
          }
          @keyframes inhaleAnimation {
            to {
              transform: scale(0);
            }
          }
        `;
    document.head.appendChild(styleElement);



    function createBall(callback) {
      floatBall.classList.add('floating-ball');
      targetNodeObject.appendChild(floatBall);
      setTimeout(() => {
        floatBall.style.top = "100px";
        setTimeout(() => {
          if (callback) callback();
        }, 1000)
      }, 100)
    }
    createBall(() => {
      init();
      center = getElementCenter(floatBall);
    });
    // 获取棍的中心点位置
    function getElementCenter(element) {
      const rect = element.getBoundingClientRect();
      const centerX = rect.left + rect.width / 2;
      const centerY = rect.top + rect.height / 2;

      return { centerX, centerY }
    }
    
    function init() {
      const steps = [];
      const elements = [];

    // 获取当前信息
      function getNodes(element) {
        const textNodes = [];
        const imageNodes = [];

        function traverse(node) {
          hasBackgroundColor(node)
          if (node.nodeType === Node.TEXT_NODE && node.nodeValue.trim() !== '') {
            textNodes.push(node);
          } else if (isImageNode(node)) {
            imageNodes.push(node);
          } else if (node.nodeType === Node.ELEMENT_NODE && !isExcludedNode(node)) {
            for (const childNode of node.childNodes) {
              traverse(childNode);
            }
          }
        }

        function isExcludedNode(node) {
          const excludedTags = ['SCRIPT', 'STYLE', 'LINK', 'IFRAME', 'path'];
          return excludedTags.includes(node.tagName);
        }

// 校验元素是否有背景颜色
        function hasBackgroundColor(node) {
          try {
            const computedStyle = window.getComputedStyle(node);
            const backgroundColor = computedStyle.backgroundColor;
            if (backgroundColor !== 'rgba(0, 0, 0, 0)' && backgroundColor !== 'transparent') {
              node.style.backgroundColor = 'rgba(255, 255, 255, 1)'
            }
          } catch (e) {
          }
        }

        traverse(element);
        return { textNodes, imageNodes };
      }

        // 添加步骤到执行队列
      function addStep(func, node) {
        steps.push(func.bind(this));
        elements.push(node);
      }
      // 开始步骤
      function startStep() {
        const interTimer = setInterval(() => {
          if (steps.length > 0) {
            const func = steps.shift();
            const element = elements.shift();
            if (func) {
              func();
              if (element) {
                const rect = element.getBoundingClientRect();
                element.style.top = `${rect.top}px`;
                element.style.left = `${rect.left}px`;
                addStep(() => {
                  element.classList.add('inhaleAnimation');
                  element.style.top = `${center.centerY}px`;
                  element.style.left = `${center.centerX}px`;
                  element.addEventListener('animationend', function () {
                    element.remove();
                  });
                })
              }
            }
          } else {
            clearInterval(interTimer);
          }
        }, timer)
      }
      
      const { textNodes, imageNodes } = getNodes(targetNodeObject);
      // 处理文字
      function textFn(node) {
        const textContent = node.nodeValue.trim();
        const newSpan = document.createElement('span');
        const newContent = Array.from(textContent).map(char => {
          const charSpan = document.createElement('span');
          charSpan.textContent = char;
          addStep(() => {
            charSpan.classList.add("highlighted-text");
          }, charSpan);
          newSpan.appendChild(charSpan);
          return charSpan.outerHTML;
        }).join('');
        node.parentNode.replaceChild(newSpan, node);
      };
      // 处理图片
      function imageFn(node) {
        const charSpan = document.createElement('span');
        node.classList.add("highlighted-image");
        addStep(() => {
          const rect = node.getBoundingClientRect();
          charSpan.style.width = `${node.width || node.clientWidth || rect.width}px`;
          charSpan.style.height = `${node.height || node.clientHeight || rect.width}px`;
          charSpan.classList.add("highlighted-image");
          node.replaceWith(charSpan);
          addStep(() => {
            charSpan.style.width = "4px";
            //charSpan.style.transform = `scale(1) rotate(${30}deg)`
          }, charSpan);
        });
      }
      textNodes.forEach(node => {
        if (node.nodeValue.indexOf('@font-face') !== -1) { return; }
        textFn(node);
      });
      imageNodes.forEach(node => {
        imageFn(node);
      });
      
    // 判断是否为图片
    function isImageNode(node) {
      if (node.tagName === 'BODY') { return; }
      const imageTags = ['IMG', 'IMAGE', 'VIDEO', 'svg', "FORM", "svg"];
      return imageTags.includes(node.tagName) &&
        !(node.tagName === 'BODY' && node.classList.contains('floating'));
    }

      startStep();
    }
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