{ "title":"let", "description":"Declares a variable with block level scope", "spec":"http://www.ecma-international.org/ecma-262/6.0/#sec-let-and-const-declarations", "status":"other", "links":[ { "url":"http://generatedcontent.org/post/54444832868/variables-and-constants-in-es6", "title":"Variables and Constants in ES6" }, { "url":"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let", "title":"Let (MDN)" } ], "bugs":[ { "description":"[Mozilla bug for supporting the standard version of let](https://bugzilla.mozilla.org/show_bug.cgi?id=932517)" } ], "categories":[ "JS API" ], "stats":{ "ie":{ "5.5":"n", "6":"n", "7":"n", "8":"n", "9":"n", "10":"n", "11":"y" }, "edge":{ "12":"y", "13":"y", "14":"y" }, "firefox":{ "2":"n d #1", "3":"n d #1", "3.5":"n d #1", "3.6":"n d #1", "4":"n d #1", "5":"n d #1", "6":"n d #1", "7":"n d #1", "8":"n d #1", "9":"n d #1", "10":"n d #1", "11":"n d #1", "12":"n d #1", "13":"n d #1", "14":"n d #1", "15":"n d #1", "16":"n d #1", "17":"n d #1", "18":"n d #1", "19":"n d #1", "20":"n d #1", "21":"n d #1", "22":"n d #1", "23":"n d #1", "24":"n d #1", "25":"n d #1", "26":"n d #1", "27":"n d #1", "28":"n d #1", "29":"n d #1", "30":"n d #1", "31":"n d #1", "32":"n d #1", "33":"n d #1", "34":"n d #1", "35":"n d #1", "36":"n d #1", "37":"n d #1", "38":"n d #1", "39":"n d #1", "40":"n d #1", "41":"n d #1", "42":"n d #1", "43":"n d #1", "44":"y", "45":"y", "46":"y", "47":"y", "48":"y", "49":"y", "50":"y", "51":"y", "52":"y", "53":"y" }, "chrome":{ "4":"n", "5":"n", "6":"n", "7":"n", "8":"n", "9":"n", "10":"n", "11":"n", "12":"n", "13":"n", "14":"n", "15":"n", "16":"n", "17":"n", "18":"n", "19":"n d #2", "20":"n d #2", "21":"n d #2", "22":"n d #2", "23":"n d #2", "24":"n d #2", "25":"n d #2", "26":"n d #2", "27":"n d #2", "28":"n d #2", "29":"n d #2", "30":"n d #2", "31":"n d #2", "32":"n d #2", "33":"n d #2", "34":"n d #2", "35":"n d #2", "36":"n d #2", "37":"n d #2", "38":"n d #2", "39":"n d #2", "40":"n d #2", "41":"a #3", "42":"a #3", "43":"a #3", "44":"a #3", "45":"a #3", "46":"a #3", "47":"a #3", "48":"a #3", "49":"y", "50":"y", "51":"y", "52":"y", "53":"y", "54":"y", "55":"y", "56":"y", "57":"y" }, "safari":{ "3.1":"n", "3.2":"n", "4":"n", "5":"n", "5.1":"n", "6":"n", "6.1":"n", "7":"n", "7.1":"n", "8":"n", "9":"n", "9.1":"n", "10":"y", "TP":"y" }, "opera":{ "9":"n", "9.5-9.6":"n", "10.0-10.1":"n", "10.5":"n", "10.6":"n", "11":"n", "11.1":"n", "11.5":"n", "11.6":"n", "12":"n", "12.1":"n", "15":"n d #2", "16":"n d #2", "17":"n d #2", "18":"n d #2", "19":"n d #2", "20":"n d #2", "21":"n d #2", "22":"n d #2", "23":"n d #2", "24":"n d #2", "25":"n d #2", "26":"n d #2", "27":"n d #2", "28":"a #3", "29":"a #3", "30":"a #3", "31":"a #3", "32":"a #3", "33":"a #3", "34":"a #3", "35":"a #3", "36":"y", "37":"y", "38":"y", "39":"y", "40":"y", "41":"y", "42":"y", "43":"y" }, "ios_saf":{ "3.2":"n", "4.0-4.1":"n", "4.2-4.3":"n", "5.0-5.1":"n", "6.0-6.1":"n", "7.0-7.1":"n", "8":"n", "8.1-8.4":"n", "9.0-9.2":"n", "9.3":"n", "10-10.1":"y" }, "op_mini":{ "all":"n" }, "android":{ "2.1":"n", "2.2":"n", "2.3":"n", "3":"n", "4":"n", "4.1":"n", "4.2-4.3":"n", "4.4":"n", "4.4.3-4.4.4":"n", "53":"y" }, "bb":{ "7":"n", "10":"n" }, "op_mob":{ "10":"n", "11":"n", "11.1":"n", "11.5":"n", "12":"n", "12.1":"n", "37":"y" }, "and_chr":{ "54":"y" }, "and_ff":{ "50":"y" }, "ie_mob":{ "10":"n", "11":"y" }, "and_uc":{ "11":"n" }, "samsung":{ "4":"a #3" } }, "notes":"", "notes_by_num":{ "1":"Supports a non-standard version that can only be used in script elements with a type attribute of `application/javascript;version=1.7`. As other browsers do not support these types of `script` tags this makes support useless for cross-browser support.", "2":"Requires the \u2018Experimental Javascript features\u2019 flag to be enabled", "3":"Only supported in strict mode" }, "usage_perc_y":71.52, "usage_perc_a":4.53, "ucprefix":false, "parent":"", "keywords":"ES6,variable,block,scope", "ie_id":"", "chrome_id":"4645595339816960", "firefox_id":"", "webkit_id":"", "shown":true }