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| function walkDOMTree( | |
| root, | |
| whatToShow = NodeFilter.SHOW_ALL, | |
| { inspect, collect, callback } = {} | |
| ) { | |
| const walker = document.createTreeWalker(root, whatToShow, { | |
| acceptNode(node) { | |
| if (inspect && !inspect(node)) { | |
| return NodeFilter.FILTER_REJECT; | |
| } | |
| if (collect && !collect(node)) { | |
| return NodeFilter.FILTER_SKIP; | |
| } | |
| return NodeFilter.FILTER_ACCEPT; | |
| }, | |
| }); | |
| const nodes = []; | |
| let n; | |
| while ((n = walker.nextNode())) { | |
| callback?.(n); | |
| nodes.push(n); | |
| } | |
| return nodes; | |
| } | |
| const PARENT_TAGS_TO_EXCLUDE = ["STYLE", "SCRIPT", "TITLE"]; | |
| function getAllTextNodes(el) { | |
| return walkDOMTree(el, NodeFilter.SHOW_TEXT, { | |
| inspect: (textNode) => | |
| !PARENT_TAGS_TO_EXCLUDE.includes(textNode.parentElement?.nodeName), | |
| }); | |
| } | |
| function generateRandomString(length) { | |
| var result = ""; | |
| var characters = | |
| "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; | |
| var charactersLength = characters.length; | |
| for (var i = 0; i < length; i++) { | |
| result += characters.charAt(Math.floor(Math.random() * charactersLength)); | |
| } | |
| return result; | |
| } | |
| const textNodes = getAllTextNodes(document.body); | |
| textNodes.forEach((node) => { | |
| const textNodeLength = node.textContent.length; | |
| node.textContent = generateRandomString(textNodeLength * 3); | |
| }); |
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