替换整个文档源代码中的字符串

3回答

蝴蝶不菲

快速编写，运行缓慢的答案是滥用innerHTML：function replace_9673_everywhere() {        const documentHtml = document.documentElement.innerHTML;    const newDocumentHtml = documentHtml.replace( /9673/g, '0000' );    document.documentElement.innerHTML = newDocumentHtml;}...但这可能会破坏文档，因为它会使浏览器重新解析所有内容（因此任何带有 DOM 元素引用的当前页面脚本状态都将被破坏）。更好的方法是遍历 DOM，因为这不会触发重新解析，前提是您操作Element.attributesand Element.textContent（和#text单独的节点）并避免完全使用innerHTML/ ：outerHTMLfunction replace_9673_everywhere() {    const rootNode = document.documentElement;    replace_9673_in_element( rootNode );}function replace_9673_in_element( el ) {    // Replace in attributes:    for( let i = 0; i < el.attributes.length; i++ ) {        const attr = el.attributes.item(i);        if( attr.value.includes( '9673' ) ) {            attr.value = attr.value.replace( /9673/g, '0000' );        }    }     // Replace in child nodes (not just Element children):    for( const childNode of el.childNodes ) {        if( childNode.nodeType === Node.TEXT_NODE ) {            if( childNode.textContent.includes( '9673' ) ) {                childNode.textContent = childNode.textContent.replace( /9673/g, '0000' );            }        }        else if( childNode.nodeType === Node.ELEMENT_NODE ) {            replace_9673_in_element( childNode );        }    }}

郎朗坤

这是另一种使用TreeWalkers 的方法，它只针对文本节点和属性，不会弄乱实际的 HTML 结构。function* iterateNodes(walker) {    let next    while (next = walker.nextNode()) {        yield next    }}const nodesUnder = (el, nodeFilters) => {    const walker = document        .createTreeWalker(el, nodeFilters)    const nodes = iterateNodes(walker)    return [...nodes]}const htmlEl = document.documentElementconst textNodes = nodesUnder(htmlEl, NodeFilter.SHOW_TEXT)const attrNodes = nodesUnder(htmlEl, NodeFilter.SHOW_ELEMENT)    .map(el => [...el.attributes])    .flat();[...textNodes, ...attrNodes].forEach(node => {    node.nodeValue = node.nodeValue.replace(/9673/g, '0000')})console.log(document.querySelector('#outer').outerHTML)* { font-family: sans-serif }<div id="outer">    <div id="changed-9673" data-attr="9673">9673 (changed)</div>    <custom-element-9673>unchanged</custom-element-9673></div>

SMILET

你想要这样的东西function replace9673() {  $("html").html($("html").html().replaceAll("9673", "0000"));}<html><head><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script><meta property="og:description" content="***April &nbsp;9673&nbsp;" /></head><body><span class="agent-phone-number">+5 9673</span><a href="#shownumber" class="js-agent-phone-number"><span class="agent-phone-number" data-mobile="9673">9673</span></a><span class="agent-phone-number">+5 9673</span><li><a href="sms:9673" class="js-agent-phone-number-sms"><i class="pgicon pgicon-comment-o"></i>SMS</a></li><button onclick="replace9673()">Click Me</button></body></html>