JavaScript code - UNIX grep command?

Hi

I am new to JavaScript & haven't done much work with it, but have mainly experience with UNIX. I have a piece of code where I want to grep (excuse the UNIX language ) for a id and get the number from that.

{
"time": 900,
"avail": 1,
"price": 0,
"datetime": "2019-11-09T15:00:00+00:00"
}
{
"name": "janice-bishop",
"date": "2019-11-09",
"event_ID": 155643,
"person_ID": 18709,
"resource_ID": 561,
"_links" :
}

Code (javascript):

I am essentially looking for something which would be
if avail = 1
then
grep event_ID
& then want to print the number which would be the event id? Not sure how possible this is within JavaScript but something along those lines like you would do with a UNIX shell script.

 

If only that string were convertable to one valid JSON object (not two) e.g.

var str = '{"time": 900,"avail": 1,"price": 0,"datetime": "2019-11-09T15:00:00+00:00", "name": "janice-bishop", "date": "2019-11-09", "event_ID": 155643, "person_ID": 18709, "resource_ID": 561, "_links": ""}';

Code (JavaScript):

then we can easily execute:

var json = JSON.parse(str);
if(json.avail === 1) alert(json.event_ID);

Code (JavaScript):

 

Hi hdewantara

So this is run as an API & the value would be dynamic as in won't always be 155643 so that will change every time it runs?

 

Yes it will, why don't you try testing it
But I guess the problem is the original return string of the API... it must be a valid JSON string or else should be converted to a valid string. You may want to validate it through this link: https://duckduckgo.com/?q=json+validator&t=ffab&ia=answer