--- title: Safari Technology Preview 10 Release Notes framework: safari-technology-preview-release-notes role: article role_heading: Article path: safari-technology-preview-release-notes/stp-release-10 --- # Safari Technology Preview 10 Release Notes Preview the latest web technology updates including: JavaScript, Web APIs, Apple Pay, Web Inspector, MathML, Rendering, Accessibility, and Security. ## Overview Overview Safari Technology Preview Release 10 is now available for download for both macOS Sierra betas and OS X El Capitan. If you already have Safari Technology Preview installed, you can update from the Mac App Store’s Updates tab. This release covers WebKit revisions 203152–203771. JavaScript Introduced exponentiation expressions (x ** y) from ECMAScript 2016 (r203499) Improved specification compatibility of use strict in functions (r203263) Web APIs Moved dir attribute from HTMLDocument to Document (r203761) Aligned Node.isEqualNode() with the specification (r203759) Made DOMTokenList iterable (r203728) Moved properties for ClientRect to the prototype (r203702) Made the parameters of DOMImplementation.createDocumentType() mandatory and non-nullable (r203701) Made the first parameter of Window.getComputedStyle() mandatory and non-nullable (r203623) Fixed null handling of SVGAngle.valueAsString and SVGLength.valueAsString (r203531) Fixed null handling of HTMLFontElement.color (r203530) Fixed null handling for several HTMLTableElement attributes (r203529) Fixed null handling for HTMLObjectElement.border (r203528) Fixed null handling for td.bgColor and tr.bgColor (r203527) Fixed null handling for several HTMLBodyElement attributes (r203525) Fixed null handling of the marginWidth and marginHeight attributes for HTMLFrameElement and HTMLIFrameElement (r203474, r203524) Fixed null handling for HTMLImageElement.border (r203523) Fixed null handling of several Document attributes (r203487) Fixed null handling of HTMLMediaElement.mediaGroup (r203463) Fixed null handling of HTMLSelectElement.value attribute (r203456) Fixed null handling of SVGScriptElement.type attribute (r203444) Fixed null handling of several HTMLDocument attributes (r203443) Fixed null handling of HTMLScriptElement.text attribute (r203428) Fixed null handling of the enctype, encoding and method properties of the form element (r203401) Fixed null handling of formEnctype and formMethod properties for input and button elements (r203394) Changed the letter-case for the playsInline IDL attribute (r203511) Dropped the SVGElement.xmlbase attribute (r203438) Aligned CSSStyleDeclaration.setProperty() with the specification (r203437) Made the EventTarget.dispatchEvent() parameter non-nullable (r203391) Apple Pay Fixed deprecated errors thrown when using requiredBillingAddressFields (r203168) Fixed onPaymentAuthorized callback not received when authorizing a second time (r203746) Fixed ending the payment session if the user closes all windows (r203741) Web Inspector Fixed slowdowns when switching away from the Console tab with a lot of messages (r203636) Fixed filtering in the Overview timeline view (r203673) Fixed maintaining the selected function when switching between different profile representations (r203243) Improved styles for the Open Quickly and Goto Line dialogs (r203290) MathML Changed the CSS display property of many MathML elements to allow page authors to override (r203163) Mapped “combining” to “non-combining” character equivalents (r203714) Improved alignment inside vertically stretched operators (r203289) Removed the padding and margin around the element (r203171) Reset the font-style property on the element (r203640) Rendering Added support for new emoji group candidates (r203330, r203533, r203626) Fixed moving scrollbars to the right when the text direction changes to right-to-left (r203267) Fixed image zoom animations that were broken on medium.com (r203380) Fixed computing elements-based snap points for containers with large maximum scroll offset values (r203684) Fixed a rendering issue causing theguardian.co.uk crossword puzzles to sometimes not display text (r203415) Accessibility Fixed an issue causing duplicate children when first-letter is being used in CSS (r203694) Fixed name calculation of headings from the aria-label attribute for VoiceOver (r203538) Added a new attribute to expose the auto-fill button type to VoiceOver (r203711) Fixed volume adjustments using VoiceOver and improved spoken feedback (r203669) Security Changed behavior to block insecure scripts running in a data: frame when the top-level page is HTTPS (r203300) Changed URL handling to remove credentials when accessed through location.href (r203258) Changed behavior to block mixed-content synchronous XHRs (r203542) Improved support for multiple policies to more closely conform to the CSP Level 2 specifications (r203434) Applied the Content Security Policy object-src and plugin-types directives for plugin replacements (r203611) Changed the behavior to prevent history.pushState and history.replaceState where a username is in the URL (r203288) Changed behavior to allow LocalStorage access for file URLs by default (r203695) ## See Also ### 2016 - [Safari Technology Preview 20 Release Notes](safari-technology-preview-release-notes/stp-release-20.md) - [Safari Technology Preview 19 Release Notes](safari-technology-preview-release-notes/stp-release-19.md) - [Safari Technology Preview 18 Release Notes](safari-technology-preview-release-notes/stp-release-18.md) - [Safari Technology Preview 17 Release Notes](safari-technology-preview-release-notes/stp-release-17.md) - [Safari Technology Preview 16 Release Notes](safari-technology-preview-release-notes/stp-release-16.md) - [Safari Technology Preview 15 Release Notes](safari-technology-preview-release-notes/stp-release-15.md) - [Safari Technology Preview 14 Release Notes](safari-technology-preview-release-notes/stp-release-14.md) - [Safari Technology Preview 13 Release Notes](safari-technology-preview-release-notes/stp-release-13.md) - [Safari Technology Preview 12 Release Notes](safari-technology-preview-release-notes/stp-release-12.md) - [Safari Technology Preview 11 Release Notes](safari-technology-preview-release-notes/stp-release-11.md) - [Safari Technology Preview 9 Release Notes](safari-technology-preview-release-notes/stp-release-9.md) - [Safari Technology Preview 8 Release Notes](safari-technology-preview-release-notes/stp-release-8.md) - [Safari Technology Preview 7 Release Notes](safari-technology-preview-release-notes/stp-release-7.md) - [Safari Technology Preview 6 Release Notes](safari-technology-preview-release-notes/stp-release-6.md) - [Safari Technology Preview 5 Release Notes](safari-technology-preview-release-notes/stp-release-5.md)