How to convert an array-like string to an array in Node.js?

Question

I am writing an API in a Node.js application. This is a POST call that sends a bunch of data and along with it, it sends the timings parameter in the body as a string that looks like an array [["11:00 AM", "1:00 PM"], ["1:00 PM", "4:00 PM"]]. When I am inserting it into MongoDB, it is getting stored as an array but with the entire text as a string in the first array element.

I know I can circumvent this by asking the client application to send a comma-separated string like 11:00 AM,1:00 PM and split the string in JavaScript before inserting it into the database using String.split() but that only works for single-dimension arrays. I have a multi-dimensional array that is being sent as a string in the POST request. How do I convert it to an array?

That worked! Thanks! Can you answer the question so I can mark it as an answer? — JackH
– JackH, Commented Sep 14, 2015 at 9:06
When you assign it to a two dimensional array variable you can get the values of each value in it. does this help? - stackoverflow.com/questions/7545641/… — giri-sh
– giri-sh, Commented Sep 14, 2015 at 9:08
If you are building web servers in JavaScript then search for the term "body parser", as it is a pretty common case to just convert string input that is acutally a JSON or other serialized format into a real data structure. And the work is generally handled for you. — Blakes Seven
– Blakes Seven, Commented Sep 14, 2015 at 9:10

venkat7668 · Accepted Answer · 2015-09-14 09:07:00Z

6

Use JSON.parse to parse string array to JS array.

var timingsAr = '[["11:00 AM", "1:00 PM"], ["1:00 PM", "4:00 PM"]]'
JSON.parse(timingsAr); //returns JS array

answered Sep 14, 2015 at 9:07

venkat7668

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