RUM JavaScript API - 1.345.1
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    Browser APIs Used by Dynatrace RUM JavaScript

    This page lists all native browser and JavaScript APIs that the current version of Dynatrace RUM JavaScript depends on.

    📝 Note

    This list reflects the current version of Dynatrace RUM JavaScript and may change across releases as new features are added or removed.

    If any of these APIs are overridden or monkey-patched on your page, Dynatrace RUM JavaScript may behave incorrectly or stop working.

    Custom implementations must be spec-conformant. Dynatrace RUM JavaScript assumes all listed APIs behave according to their respective web or ECMAScript specifications. Non-spec-conforming overrides are the most common cause of unexpected failures that are difficult to diagnose.

    The following table lists every browser API that the current version of Dynatrace RUM JavaScript relies on. Each entry links to the relevant MDN documentation.

    Browser API MDN Reference
    AbortController (constructor) MDN
    AbortController.prototype.abort MDN
    AbortSignal.prototype.addEventListener MDN
    AbortSignal.prototype.removeEventListener MDN
    AbortSignal.timeout MDN
    Array.from MDN
    Array.isArray MDN
    Array.prototype.concat MDN
    Array.prototype.every MDN
    Array.prototype.fill MDN
    Array.prototype.filter MDN
    Array.prototype.find MDN
    Array.prototype.findLast MDN
    Array.prototype.flat MDN
    Array.prototype.flatMap MDN
    Array.prototype.forEach MDN
    Array.prototype.includes MDN
    Array.prototype.indexOf MDN
    Array.prototype.join MDN
    Array.prototype.map MDN
    Array.prototype.pop MDN
    Array.prototype.push MDN
    Array.prototype.reduce MDN
    Array.prototype.reverse MDN
    Array.prototype.shift MDN
    Array.prototype.slice MDN
    Array.prototype.some MDN
    Array.prototype.sort MDN
    Array.prototype.splice MDN
    Array.prototype.unshift MDN
    ArrayBuffer.prototype.slice MDN
    Blob (constructor) MDN
    clearInterval MDN
    clearTimeout MDN
    console.error MDN
    console.log MDN
    console.warn MDN
    Crypto.prototype.getRandomValues MDN
    CustomEvent (constructor) MDN
    Date.now MDN
    decodeURIComponent MDN
    Document.prototype.addEventListener MDN
    Document.prototype.createElement MDN
    Document.prototype.getElementById MDN
    Document.prototype.removeEventListener MDN
    document.querySelector MDN
    document.querySelectorAll MDN
    DOMException (constructor) MDN
    Element.prototype.closest MDN
    Element.prototype.getAttribute MDN
    Element.prototype.hasAttribute MDN
    Element.prototype.matches MDN
    Element.prototype.querySelector MDN
    Element.prototype.setAttribute MDN
    encodeURIComponent MDN
    Error (constructor) MDN
    Event.prototype.composedPath MDN
    Event.prototype.preventDefault MDN
    Event.prototype.stopImmediatePropagation MDN
    Event.prototype.stopPropagation MDN
    EventTarget.prototype.addEventListener MDN
    EventTarget.prototype.dispatchEvent MDN
    EventTarget.prototype.removeEventListener MDN
    fetch MDN
    Function.prototype.apply MDN
    Function.prototype.bind MDN
    Function.prototype.call MDN
    Function.prototype.toString MDN
    Function.toString MDN
    Headers (constructor) MDN
    Headers.prototype.get MDN
    Headers.prototype.set MDN
    JSON.parse MDN
    JSON.stringify MDN
    Map (constructor) MDN
    Map.prototype.clear MDN
    Map.prototype.delete MDN
    Map.prototype.forEach MDN
    Map.prototype.get MDN
    Map.prototype.has MDN
    Map.prototype.set MDN
    Map.prototype.values MDN
    Math.abs MDN
    Math.ceil MDN
    Math.floor MDN
    Math.max MDN
    Math.min MDN
    Math.pow MDN
    Math.round MDN
    MutationObserver.prototype.disconnect MDN
    MutationObserver.prototype.observe MDN
    NamedNodeMap.prototype.getNamedItem MDN
    Navigation.prototype.addEventListener MDN
    Navigation.prototype.removeEventListener MDN
    Navigator.prototype.sendBeacon MDN
    Node.prototype.appendChild MDN
    Node.prototype.getRootNode MDN
    Number.isFinite MDN
    Number.isInteger MDN
    Number.isNaN MDN
    Number.parseFloat MDN
    Number.prototype.toFixed MDN
    Number.prototype.toString MDN
    Object.assign MDN
    Object.create MDN
    Object.defineProperties MDN
    Object.defineProperty MDN
    Object.entries MDN
    Object.freeze MDN
    Object.fromEntries MDN
    Object.getOwnPropertyDescriptor MDN
    Object.getOwnPropertyNames MDN
    Object.keys MDN
    Object.prototype.hasOwnProperty MDN
    Object.prototype.toString MDN
    Object.setPrototypeOf MDN
    Object.values MDN
    Performance.prototype.getEntriesByName MDN
    Performance.prototype.getEntriesByType MDN
    Performance.prototype.now MDN
    PerformanceObserver (constructor) MDN
    PerformanceObserver.prototype.disconnect MDN
    PerformanceObserver.prototype.observe MDN
    PerformanceObserverEntryList.prototype.getEntries MDN
    postMessage MDN
    Promise (constructor) MDN
    Promise.all MDN
    Promise.prototype.catch MDN
    Promise.prototype.finally MDN
    Promise.prototype.then MDN
    Promise.race MDN
    Promise.reject MDN
    Promise.resolve MDN
    Proxy (constructor) MDN
    queueMicrotask MDN
    Reflect.construct MDN
    Reflect.get MDN
    Reflect.set MDN
    RegExp (constructor) MDN
    RegExp.prototype.exec MDN
    RegExp.prototype.test MDN
    ReportingObserver.prototype.disconnect MDN
    ReportingObserver.prototype.observe MDN
    Response.prototype.json MDN
    Set (constructor) MDN
    Set.prototype.add MDN
    Set.prototype.clear MDN
    Set.prototype.delete MDN
    Set.prototype.forEach MDN
    Set.prototype.has MDN
    setInterval MDN
    setTimeout MDN
    Storage.prototype.getItem MDN
    Storage.prototype.key MDN
    Storage.prototype.removeItem MDN
    Storage.prototype.setItem MDN
    String.fromCharCode MDN
    String.prototype.charAt MDN
    String.prototype.charCodeAt MDN
    String.prototype.codePointAt MDN
    String.prototype.endsWith MDN
    String.prototype.includes MDN
    String.prototype.indexOf MDN
    String.prototype.lastIndexOf MDN
    String.prototype.localeCompare MDN
    String.prototype.match MDN
    String.prototype.padStart MDN
    String.prototype.replace MDN
    String.prototype.replaceAll MDN
    String.prototype.slice MDN
    String.prototype.split MDN
    String.prototype.startsWith MDN
    String.prototype.substring MDN
    String.prototype.toLowerCase MDN
    String.prototype.toString MDN
    String.prototype.toUpperCase MDN
    String.prototype.trim MDN
    Symbol.for MDN
    SyntaxError (constructor) MDN
    TextEncoder (constructor) MDN
    TextEncoder.prototype.encode MDN
    Uint8Array (constructor) MDN
    URL (constructor) MDN
    VisualViewport.prototype.addEventListener MDN
    VisualViewport.prototype.removeEventListener MDN
    WeakMap (constructor) MDN
    WeakMap.prototype.delete MDN
    WeakMap.prototype.get MDN
    WeakMap.prototype.set MDN
    WeakSet (constructor) MDN
    WeakSet.prototype.add MDN
    WeakSet.prototype.has MDN
    Window.prototype.addEventListener MDN
    Window.prototype.removeEventListener MDN
    XMLHttpRequest MDN
    XMLHttpRequest.prototype.getResponseHeader MDN
    XMLHttpRequest.prototype.setRequestHeader MDN
    XMLHttpRequestUpload.prototype.addEventListener MDN