I’m never quite sure whether the Javascript Object Notation is a blessing or a curse. Of course, it does allow for quick creation of lists, but the way it is implemented I always find myself adding a few extra brackets just to make sure it is really treated as an object definition, not a code block.<\/p>\n
Take his for example:<\/p>\n
Looks an awful lot like an object definition with an immediate access to the title property, doesn’t it? Well try to run it.<\/p>\n Huh? “title”? The problem is that this statement is ambiguous: It could either mean “Create object title set to Hello World” or “Code block with label title and string Hello World”. The meaning of [‘title’] then would mean “Access title property” for the first interpretation and “Create new Array with string title”. In this case, the second meaning is chosen and [‘title’] turns into the string “title” during output.<\/p>\n Now, this doesn’t happen nearly as often outside javascript: urls since the code grammar usually dictates how to interpret the block, but it still occasionally pops up.<\/p>\n What do we learn from this? Don’t forget to quote the identifiers, don’t hold back on brackets and don’t forget the semicolon:<\/p>\n I’m never quite sure whether the Javascript Object Notation is a blessing or a curse. Of course, it does allow for quick creation of lists, but the way it is implemented I always find myself adding a few extra brackets just to make sure it is really treated as an object definition, not a code … Continue reading Javascript Object Notation is a strange beast<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/posts\/126"}],"collection":[{"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/comments?post=126"}],"version-history":[{"count":7,"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/posts\/126\/revisions"}],"predecessor-version":[{"id":182,"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/posts\/126\/revisions\/182"}],"wp:attachment":[{"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/media?parent=126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/categories?post=126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tapper-ware.net\/blog\/wp-json\/wp\/v2\/tags?post=126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}{title:'Hello World'}['title'];<\/a><\/code><\/p>\n({'title':'Hello World'})['title'];<\/a><\/code><\/p>\n","protected":false},"excerpt":{"rendered":"