{
  "title":"ECMAScript 5",
  "description":"Full support for the ECMAScript 5 specification. Features include `Function.prototype.bind`, Array methods like `indexOf`, `forEach`, `map` & `filter`, Object methods like `defineProperty`, `create` & `keys`, the `trim` method on Strings and many more.",
  "spec":"https://www.ecma-international.org/ecma-262/5.1/",
  "status":"other",
  "links":[
    {
      "url":"https://kangax.github.io/compat-table/es5/",
      "title":"Detailed compatibility tables & tests"
    },
    {
      "url":"https://johnresig.com/blog/ecmascript-5-objects-and-properties/",
      "title":"Overview of objects & properties"
    },
    {
      "url":"https://github.com/es-shims/es5-shim",
      "title":"ES5 polyfill"
    },
    {
      "url":"https://github.com/zloirock/core-js#ecmascript",
      "title":"Polyfill for all possible ES5 features is available in the core-js library"
    }
  ],
  "bugs":[
    
  ],
  "categories":[
    "JS"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n #4",
      "9":"a #2",
      "10":"y",
      "11":"y"
    },
    "edge":{
      "12":"y",
      "13":"y",
      "14":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "79":"y",
      "80":"y",
      "81":"y",
      "83":"y",
      "84":"y"
    },
    "firefox":{
      "2":"a",
      "3":"a",
      "3.5":"a",
      "3.6":"a",
      "4":"a #1",
      "5":"a #1",
      "6":"a #1",
      "7":"a #1",
      "8":"a #1",
      "9":"a #1",
      "10":"a #1",
      "11":"a #1",
      "12":"a #1",
      "13":"a #1",
      "14":"a #1",
      "15":"a #1",
      "16":"a #1",
      "17":"a #1",
      "18":"a #1",
      "19":"a #1",
      "20":"a #1",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "59":"y",
      "60":"y",
      "61":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y",
      "66":"y",
      "67":"y",
      "68":"y",
      "69":"y",
      "70":"y",
      "71":"y",
      "72":"y",
      "73":"y",
      "74":"y",
      "75":"y",
      "76":"y",
      "77":"y",
      "78":"y",
      "79":"y",
      "80":"y",
      "81":"y",
      "82":"y"
    },
    "chrome":{
      "4":"a",
      "5":"a",
      "6":"a",
      "7":"a",
      "8":"a",
      "9":"a",
      "10":"a",
      "11":"a",
      "12":"a",
      "13":"a",
      "14":"a",
      "15":"a",
      "16":"a",
      "17":"a",
      "18":"a",
      "19":"a #1",
      "20":"a #1",
      "21":"a #1",
      "22":"a #1",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "59":"y",
      "60":"y",
      "61":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y",
      "66":"y",
      "67":"y",
      "68":"y",
      "69":"y",
      "70":"y",
      "71":"y",
      "72":"y",
      "73":"y",
      "74":"y",
      "75":"y",
      "76":"y",
      "77":"y",
      "78":"y",
      "79":"y",
      "80":"y",
      "81":"y",
      "83":"y",
      "84":"y",
      "85":"y",
      "86":"y",
      "87":"y",
      "88":"y"
    },
    "safari":{
      "3.1":"a",
      "3.2":"a",
      "4":"a",
      "5":"a",
      "5.1":"a",
      "6":"y",
      "6.1":"y",
      "7":"y",
      "7.1":"y",
      "8":"y",
      "9":"y",
      "9.1":"y",
      "10":"y",
      "10.1":"y",
      "11":"y",
      "11.1":"y",
      "12":"y",
      "12.1":"y",
      "13":"y",
      "13.1":"y",
      "14":"y",
      "TP":"y"
    },
    "opera":{
      "9":"a",
      "9.5-9.6":"a",
      "10.0-10.1":"a",
      "10.5":"a",
      "10.6":"a",
      "11":"a",
      "11.1":"a",
      "11.5":"a",
      "11.6":"a",
      "12":"a",
      "12.1":"a #1",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "60":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y",
      "66":"y",
      "67":"y",
      "68":"y",
      "69":"y",
      "70":"y"
    },
    "ios_saf":{
      "3.2":"a",
      "4.0-4.1":"a",
      "4.2-4.3":"a",
      "5.0-5.1":"a",
      "6.0-6.1":"y",
      "7.0-7.1":"y",
      "8":"y",
      "8.1-8.4":"y",
      "9.0-9.2":"y",
      "9.3":"y",
      "10.0-10.2":"y",
      "10.3":"y",
      "11.0-11.2":"y",
      "11.3-11.4":"y",
      "12.0-12.1":"y",
      "12.2-12.4":"y",
      "13.0-13.1":"y",
      "13.2":"y",
      "13.3":"y",
      "13.4-13.5":"y",
      "14.0":"y"
    },
    "op_mini":{
      "all":"a #1"
    },
    "android":{
      "2.1":"a",
      "2.2":"a",
      "2.3":"a",
      "3":"a",
      "4":"a #1 #2 #3",
      "4.1":"a #1",
      "4.2-4.3":"a #1",
      "4.4":"y",
      "4.4.3-4.4.4":"y",
      "81":"y"
    },
    "bb":{
      "7":"a",
      "10":"y"
    },
    "op_mob":{
      "10":"a",
      "11":"a",
      "11.1":"a",
      "11.5":"a",
      "12":"a",
      "12.1":"a #1",
      "46":"y"
    },
    "and_chr":{
      "84":"y"
    },
    "and_ff":{
      "79":"y"
    },
    "ie_mob":{
      "10":"y",
      "11":"y"
    },
    "and_uc":{
      "12.12":"y"
    },
    "samsung":{
      "4":"y",
      "5.0-5.4":"y",
      "6.2-6.4":"y",
      "7.2-7.4":"y",
      "8.2":"y",
      "9.2":"y",
      "10.1":"y",
      "11.1-11.2":"y",
      "12.0":"y"
    },
    "and_qq":{
      "10.4":"y"
    },
    "baidu":{
      "7.12":"y"
    },
    "kaios":{
      "2.5":"y"
    }
  },
  "notes":"As the specification includes many JavaScript features, un-numbered partial support varies widely and is shown in detail on the [ECMAScript 5 compatibility tables](http://kangax.github.io/compat-table/es5/) by Kangax.",
  "notes_by_num":{
    "1":"Does not support `parseInt()` ignoring leading zeros. ",
    "2":"Does not support Strict mode",
    "3":"Does not support zero-width chars in identifiers & Immutable `undefined`",
    "4":"IE8 has virtually no ES5 support, but does support `Object.defineProperty`, `Object.getOwnPropertyDescriptor`, JSON parsing & Property access on strings"
  },
  "usage_perc_y":96.9,
  "usage_perc_a":1.71,
  "ucprefix":false,
  "parent":"",
  "keywords":"es5,javascript,js,function.bind,array.foreach,array.indexof,array.map,object.keys,date.now,defineproperties,getprototypeof,keys,seal,freeze,preventextensions,issealed,isfrozen,isextensible,getownpropertydescriptorgetownpropertynames,toisostringc,isarray,lastindexof,every,some,reduce,reduceright,getter,setter",
  "ie_id":"",
  "chrome_id":"",
  "firefox_id":"",
  "webkit_id":"",
  "shown":true
}