Emacs 26.1 Here json file:
[
{
"id": 11,
"name": "my name"
},
{
"id": 22,
"name": "my name3"
},
{
"id": 33,
"name": "my name3"
}
]
As you can see the count of elements are 3. Nice. Is it possible to get count of elements? Suppose I has large json and I need to get count of elements? Maybe has some method that can do this.
P.S. Structure of one item is:
{
"id": xx,
"name": "xxxx"
}
You can use json-read function
json-readis a compiled Lisp function injson.el.Parse and return the JSON object following point. Advances point just past JSON object.
like this
(save-excursion
(goto-char (point-min))
(length (json-read)))
Here my custom function:
(defun json-count-elements ()
(interactive)
(save-excursion
(goto-char (point-min))
(message "Count of json elements: %d" (length (json-read)))))
