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();
}