mirror of https://github.com/thangisme/notes.git
293 lines
5.5 KiB
JSON
293 lines
5.5 KiB
JSON
{
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"title":"const",
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"description":"Declares a constant with block level scope",
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"spec":"http://www.ecma-international.org/ecma-262/6.0/#sec-let-and-const-declarations",
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"status":"other",
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"links":[
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{
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"url":"http://generatedcontent.org/post/54444832868/variables-and-constants-in-es6",
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"title":"Variables and Constants in ES6"
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},
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{
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"url":"https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/const",
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"title":"Const (MDN)"
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}
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],
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"bugs":[
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],
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"categories":[
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"JS API"
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],
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"stats":{
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"ie":{
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"5.5":"n",
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"6":"n",
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"7":"n",
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"8":"n",
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"9":"n",
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"10":"n",
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"11":"y"
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},
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"edge":{
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"12":"y",
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"13":"y",
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"14":"y",
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"15":"y"
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},
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"firefox":{
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"2":"a #1",
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"3":"a #1",
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"3.5":"a #1",
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"3.6":"a #1",
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"4":"a #1",
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"5":"a #1",
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"6":"a #1",
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"7":"a #1",
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"8":"a #1",
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"9":"a #1",
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"10":"a #1",
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"11":"a #1",
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"12":"a #1",
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"13":"a #2",
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"14":"a #2",
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"15":"a #2",
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"16":"a #2",
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"17":"a #2",
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"18":"a #2",
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"19":"a #2",
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"20":"a #2",
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"21":"a #2",
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"22":"a #2",
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"23":"a #2",
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"24":"a #2",
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"25":"a #2",
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"26":"a #2",
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"27":"a #2",
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"28":"a #2",
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"29":"a #2",
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"30":"a #2",
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"31":"a #2",
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"32":"a #2",
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"33":"a #2",
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"34":"a #2",
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"35":"a #2",
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"36":"y",
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"37":"y",
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"38":"y",
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"39":"y",
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"40":"y",
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"41":"y",
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"42":"y",
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"43":"y",
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"44":"y",
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"45":"y",
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"46":"y",
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"47":"y",
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"48":"y",
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"49":"y",
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"50":"y",
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"51":"y",
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"52":"y",
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"53":"y",
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"54":"y"
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},
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"chrome":{
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"4":"a #2",
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"5":"a #2",
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"6":"a #2",
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"7":"a #2",
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"8":"a #2",
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"9":"a #2",
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"10":"a #2",
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"11":"a #2",
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"12":"a #2",
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"13":"a #2",
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"14":"a #2",
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"15":"a #2",
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"16":"a #2",
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"17":"a #2",
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"18":"a #2",
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"19":"a #2",
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"20":"a #2",
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"21":"a #2 #3",
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"22":"a #2 #3",
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"23":"a #2 #3",
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"24":"a #2 #3",
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"25":"a #2 #3",
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"26":"a #2 #3",
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"27":"a #2 #3",
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"28":"a #2 #3",
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"29":"a #2 #3",
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"30":"a #2 #3",
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"31":"a #2 #3",
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"32":"a #2 #3",
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"33":"a #2 #3",
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"34":"a #2 #3",
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"35":"a #2 #3",
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"36":"a #2 #3",
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"37":"a #2 #3",
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"38":"a #2 #3",
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"39":"a #2 #3",
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"40":"a #2 #3",
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"41":"a #4",
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"42":"a #4",
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"43":"a #4",
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"44":"a #4",
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"45":"a #4",
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"46":"a #4",
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"47":"a #4",
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"48":"a #4",
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"49":"y",
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"50":"y",
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"51":"y",
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"52":"y",
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"53":"y",
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"54":"y",
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"55":"y",
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"56":"y",
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"57":"y",
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"58":"y",
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"59":"y"
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},
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"safari":{
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"3.1":"a #2",
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"3.2":"a #2",
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"4":"a #2",
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"5":"a #2",
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"5.1":"a #2 #3",
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"6":"a #2 #3",
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"6.1":"a #2 #3",
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"7":"a #2 #3",
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"7.1":"a #2 #3",
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"8":"a #2 #3",
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"9":"a #2 #3",
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"9.1":"a #2 #3",
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"10":"y",
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"10.1":"y",
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"TP":"y"
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},
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"opera":{
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"9":"n",
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"9.5-9.6":"n",
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"10.0-10.1":"a #1",
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"10.5":"a #1",
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"10.6":"a #1",
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"11":"a #1",
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"11.1":"a #1",
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"11.5":"a #1",
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"11.6":"a #1 #3",
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"12":"a #1 #3",
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"12.1":"a #1 #3",
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"15":"a #2 #3",
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"16":"a #2 #3",
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"17":"a #2 #3",
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"18":"a #2 #3",
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"19":"a #2 #3",
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"20":"a #2 #3",
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"21":"a #2 #3",
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"22":"a #2 #3",
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"23":"a #2 #3",
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"24":"a #2 #3",
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"25":"a #2 #3",
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"26":"a #2 #3",
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"27":"a #2 #3",
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"28":"a #4",
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"29":"a #4",
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"30":"a #4",
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"31":"a #4",
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"32":"a #4",
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"33":"a #4",
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"34":"a #4",
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"35":"a #4",
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"36":"y",
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"37":"y",
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"38":"y",
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"39":"y",
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"40":"y",
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"41":"y",
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"42":"y",
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"43":"y",
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"44":"y",
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"45":"y"
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},
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"ios_saf":{
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"3.2":"a #2",
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"4.0-4.1":"a #2",
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"4.2-4.3":"a #2",
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"5.0-5.1":"a #2 #3",
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"6.0-6.1":"a #2 #3",
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"7.0-7.1":"a #2 #3",
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"8":"a #2 #3",
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"8.1-8.4":"a #2 #3",
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"9.0-9.2":"a #2 #3",
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"9.3":"a #2 #3",
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"10.0-10.2":"y"
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},
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"op_mini":{
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"all":"a #1 #3"
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},
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"android":{
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"2.1":"u",
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"2.2":"u",
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"2.3":"a #2",
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"3":"a #2 #3",
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"4":"a #2 #3",
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"4.1":"a #2 #3",
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"4.2-4.3":"a #2 #3",
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"4.4":"a #2 #3",
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"4.4.3-4.4.4":"a #2 #3",
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"53":"y"
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},
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"bb":{
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"7":"a #2 #3",
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"10":"a #2 #3"
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},
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"op_mob":{
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"10":"a #1",
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"11":"a #1",
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"11.1":"a #1",
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"11.5":"a #1",
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"12":"a #1 #3",
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"12.1":"a #1 #3",
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"37":"y"
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},
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"and_chr":{
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"56":"y"
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},
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"and_ff":{
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"51":"y"
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},
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"ie_mob":{
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"10":"n",
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"11":"y"
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},
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"and_uc":{
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"11":"a #2 #3"
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},
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"samsung":{
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"4":"a #4"
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},
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"and_qq":{
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"1.2":"a #2 #3"
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}
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},
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"notes":"",
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"notes_by_num":{
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"1":"const is recognized, but treated like var (no block scope, can be overwritten)",
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"2":"const does not have block scope",
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"3":"Only recognized when NOT in strict mode",
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"4":"Supported correctly in strict mode, otherwise supported without block scope"
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},
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"usage_perc_y":73.46,
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"usage_perc_a":23.77,
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"ucprefix":false,
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"parent":"",
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"keywords":"ES6,constant,block,scope",
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"ie_id":"",
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"chrome_id":"4645595339816960",
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"firefox_id":"",
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"webkit_id":"",
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"shown":true
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}
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