Fydler UtilityBelt - XML Path Validator

XML Path Validator (XPath)

Data & Formatting Tool

XML Data

XPath Expression

Evaluation Result

---

Help & Examples

Common XPath Syntax:

/: Select from the root node
//: Select nodes from the current node that match the selection no matter where they are
.: Select the current node
..: Select the parent of the current node
@: Select attributes
[1]: Select the first element
[@lang='en']: Select elements with a specific attribute value

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lucide.createIcons(); const xmlInput = document.getElementById('xml-input'); const pathInput = document.getElementById('path-input'); const resultOutput = document.getElementById('result-output'); const btnEvaluate = document.getElementById('btn-evaluate'); const btnCopy = document.getElementById('btn-copy-result'); btnEvaluate.addEventListener('click', evaluateXPath); pathInput.addEventListener('keydown', (e) => { if (e.key === 'Enter') evaluateXPath(); }); btnCopy.addEventListener('click', () => { const text = resultOutput.textContent; if (text !== '---') { navigator.clipboard.writeText(text); showToast('Result copied!'); } }); // Show/hide copy button const resultBox = document.querySelector('.result-box'); resultBox.addEventListener('mouseenter', () => { if(resultOutput.textContent !== '---') btnCopy.style.opacity = '1'; }); resultBox.addEventListener('mouseleave', () => { btnCopy.style.opacity = '0'; }); function evaluateXPath() { const xmlStr = xmlInput.value.trim(); const pathStr = pathInput.value.trim(); if (!xmlStr) return showError('Please enter XML data'); if (!pathStr) return showError('Please enter an XPath expression'); try { const parser = new DOMParser(); const xmlDoc = parser.parseFromString(xmlStr, "text/xml"); // Check for parsing errors const errorNode = xmlDoc.querySelector('parsererror'); if (errorNode) { return showError('XML Parsing Error: ' + errorNode.textContent); } resultOutput.style.color = ''; const result = []; const xpathResult = xmlDoc.evaluate(pathStr, xmlDoc, null, XPathResult.ANY_TYPE, null); if (xpathResult.resultType === XPathResult.NUMBER_TYPE) { result.push(xpathResult.numberValue); } else if (xpathResult.resultType === XPathResult.STRING_TYPE) { result.push(xpathResult.stringValue); } else if (xpathResult.resultType === XPathResult.BOOLEAN_TYPE) { result.push(xpathResult.booleanValue); } else { let node = xpathResult.iterateNext(); while (node) { // For nodes, we serialize them back to string for display const serializer = new XMLSerializer(); result.push(serializer.serializeToString(node)); node = xpathResult.iterateNext(); } } if (result.length === 0) { resultOutput.textContent = 'No matches found.'; } else { resultOutput.textContent = result.join('\n---\n'); } } catch (err) { showError('XPath Error: ' + err.message); } } function showError(msg) { resultOutput.textContent = msg; resultOutput.style.color = '#dc2626'; } function showToast(msg) { const toast = document.getElementById('toast'); const toastMsg = document.getElementById('toast-message'); toastMsg.textContent = msg; toast.classList.add('show'); setTimeout(() => toast.classList.remove('show'), 2000); }