diff --git a/syntax/javascript.vim b/syntax/javascript.vim
index 04179088..3086c39d 100644
--- a/syntax/javascript.vim
+++ b/syntax/javascript.vim
@@ -83,8 +83,8 @@ syntax region  jsObjectValue       contained start=/:/ end=/\%(,\|}\)\@=/ contai
 syntax match   jsObjectFuncName    contained /\<[a-zA-Z_$][0-9a-zA-Z_$]*\>[\r\n\t ]*(\@=/ skipwhite skipempty nextgroup=jsFuncArgs
 syntax match   jsFunctionKey       contained /\<[a-zA-Z_$][0-9a-zA-Z_$]*\>\(\s*:\s*function\s*\)\@=/
 syntax match   jsObjectGetSet      contained /\%(get\|set\|static\)\%( \k\+\)\@=/ skipwhite skipempty nextgroup=jsObjectFuncName
-syntax region  jsFunctionStringKey contained start=+"+  skip=+\\\("\|$\)+  end=+"\|$+  contains=jsSpecial,@Spell extend skipwhite skipempty nextgroup=jsFuncArgs
-syntax region  jsFunctionStringKey contained start=+'+  skip=+\\\('\|$\)+  end=+'\|$+  contains=jsSpecial,@Spell extend skipwhite skipempty nextgroup=jsFuncArgs
+syntax region  jsObjectStringKey   contained start=+"+  skip=+\\\("\|$\)+  end=+"\|$+  contains=jsSpecial,@Spell extend skipwhite skipempty nextgroup=jsFuncArgs,jsObjectValue
+syntax region  jsObjectStringKey   contained start=+'+  skip=+\\\('\|$\)+  end=+'\|$+  contains=jsSpecial,@Spell extend skipwhite skipempty nextgroup=jsFuncArgs,jsObjectValue
 
 exe 'syntax keyword jsNull      null             '.(exists('g:javascript_conceal_null')      ? 'conceal cchar='.g:javascript_conceal_null       : '')
 exe 'syntax keyword jsReturn    return contained '.(exists('g:javascript_conceal_return')    ? 'conceal cchar='.g:javascript_conceal_return     : '')
@@ -134,11 +134,11 @@ syntax region  jsParenIfElse contained matchgroup=jsParens            start=/(/
 syntax region  jsParenRepeat contained matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll skipwhite skipempty nextgroup=jsBlock extend fold
 syntax region  jsParenSwitch contained matchgroup=jsParens            start=/(/  end=/)/  contains=@jsAll skipwhite skipempty nextgroup=jsSwitchBlock extend fold
 syntax region  jsParenCatch  contained matchgroup=jsParens            start=/(/  end=/)/  skipwhite skipempty nextgroup=jsBlock extend fold
-syntax region  jsClassBlock  contained matchgroup=jsClassBraces       start=/{/  end=/}/  contains=jsClassFuncName,jsClassMethodDefinitions,jsOperator,jsArrowFunction,jsArrowFuncArgs,jsComment,jsGenerator,jsDecorator,jsClassProperty,jsClassPropertyComputed,jsFunctionStringKey,jsNoise extend fold
+syntax region  jsClassBlock  contained matchgroup=jsClassBraces       start=/{/  end=/}/  contains=jsClassFuncName,jsClassMethodDefinitions,jsOperator,jsArrowFunction,jsArrowFuncArgs,jsComment,jsGenerator,jsDecorator,jsClassProperty,jsClassPropertyComputed,jsClassStringKey,jsNoise extend fold
 syntax region  jsFuncBlock   contained matchgroup=jsFuncBraces        start=/{/  end=/}/  contains=@jsAll extend fold
 syntax region  jsBlock       contained matchgroup=jsBraces            start=/{/  end=/}/  contains=@jsAll extend fold
 syntax region  jsSwitchBlock contained matchgroup=jsBraces            start=/{/  end=/}/  contains=@jsAll,jsLabel extend fold
-syntax region  jsObject                matchgroup=jsObjectBraces      start=/{/  end=/}/  contains=jsObjectKey,jsObjectKeyString,jsObjectKeyComputed,jsObjectSeparator,jsObjectFuncName,jsObjectGetSet,jsGenerator,jsComment,jsSpreadOperator,jsFunctionStringKey extend fold
+syntax region  jsObject                matchgroup=jsObjectBraces      start=/{/  end=/}/  contains=jsObjectKey,jsObjectKeyString,jsObjectKeyComputed,jsObjectSeparator,jsObjectFuncName,jsObjectGetSet,jsGenerator,jsComment,jsSpreadOperator,jsObjectStringKey extend fold
 syntax region  jsTernaryIf             matchgroup=jsTernaryIfOperator start=/?/  end=/\%(:\|[\}]\@=\)/  contains=@jsExpression
 
 syntax match   jsGenerator            contained /\*/ skipwhite skipempty nextgroup=jsFuncName,jsFuncArgs
@@ -168,6 +168,8 @@ syntax match   jsClassProperty          contained /\<[0-9a-zA-Z_$]*\>\(\s*=\)\@=
 syntax region  jsClassValue             contained start=/=/ end=/\%(;\|}\|\n\)\@=/ contains=@jsExpression
 syntax region  jsClassPropertyComputed  contained matchgroup=jsBrackets start=/\[/ end=/]/ contains=@jsExpression skipwhite skipempty nextgroup=jsFuncArgs,jsClassValue extend
 syntax match   jsClassFuncName          contained /\<[a-zA-Z_$][0-9a-zA-Z_$]*\>\%(\s*(\)\@=/ skipwhite skipempty nextgroup=jsFuncArgs
+syntax region  jsClassStringKey         contained start=+"+  skip=+\\\("\|$\)+  end=+"\|$+  contains=jsSpecial,@Spell extend skipwhite skipempty nextgroup=jsFuncArgs
+syntax region  jsClassStringKey         contained start=+'+  skip=+\\\('\|$\)+  end=+'\|$+  contains=jsSpecial,@Spell extend skipwhite skipempty nextgroup=jsFuncArgs
 
 " Comments
 syntax keyword jsCommentTodo    contained TODO FIXME XXX TBD
@@ -231,7 +233,8 @@ if version >= 508 || !exists("did_javascript_syn_inits")
   HiLink jsString               String
   HiLink jsObjectKeyString      String
   HiLink jsTemplateString       String
-  HiLink jsFunctionStringKey    String
+  HiLink jsObjectStringKey      String
+  HiLink jsClassStringKey       String
   HiLink jsTaggedTemplate       StorageClass
   HiLink jsTernaryIfOperator    Operator
   HiLink jsRegexpString         String