1818818 - FastClick use on wellcare.com breaks drop-downs on Firefox Android

Status: REOPENED

(Web Compatibility :: Site Reports, enhancement, P3)

Description

[Ksenia Berezina [:ksenia]]

This is a variation of bug1448747, with the site using an older version of fastclick:

FastClick.notNeeded = function (a) {
  'use strict';
  var b,
  c,
  d;
  if ('undefined' == typeof window.ontouchstart) return !0;
  if (c = + (/Chrome\/([0-9]+)/.exec(navigator.userAgent) || [
    ,
    0
  ]) [1]) {
    if (!deviceIsAndroid) return !0;
    if (b = document.querySelector('meta[name=viewport]')) {
      if ( - 1 !== b.content.indexOf('user-scalable=no')) return !0;
      if (c > 31 && document.documentElement.scrollWidth <= window.outerWidth) return !0
    }
  }
  if (deviceIsBlackBerry10 && (d = navigator.userAgent.match(/Version\/([0-9]*)\.([0-9]*)/), d[1] >= 10 && d[2] >= 3 && (b = document.querySelector('meta[name=viewport]')))) {
    if ( - 1 !== b.content.indexOf('user-scalable=no')) return !0;
    if (document.documentElement.scrollWidth <= window.outerWidth) return !0
  }
  return 'none' === a.style.msTouchAction ? !0 : !1
},

Setting msTouchAction to none makes FastClick.notNeeded function return true:

const proto = CSS2Properties.prototype.wrappedJSObject;
Object.defineProperty(proto, "msTouchAction", {
  get: exportFunction(function() {
    return "none";
  }, window),

  set: exportFunction(function() {}, window),
});

Comment 1

[Ksenia Berezina [:ksenia]]

There is same older version of fastclick being used on marksandspencer.com check out page

Comment 2

[Ksenia Berezina [:ksenia]]

chatiw.com uses it as well

Comment 3

[Ksenia Berezina [:ksenia]]

This was shipped in bug1805409.

Comment 4

[Thomas Wisniewski [:twisniewski][on PTO until July 6]]

Reopening this one, since we're now tracking the status of webcompat issues with interventions differently.