Extract lat/lng coordinates from a string-CodePudding

I've got a string which contains several coordinates. It is just random human readable text. For example:

Bla bla bla 35.45672,-162.91938 yadda yadda yadda -6.53197, 132.07407 bla bla

I would like to extract all the coordinates from the text to an array. The coordinates are seperated by a comma, or a comma and a space (As in the example above). There is no fixed length or seperators. There is no fixed amount of coordinates. It is just random text containing lat/lng coordinates.

What would be the best way to extract all coordinates from the text into an array?

CodePudding user response：

You could use match() here with an appropriate regex pattern:

var input = "Bla bla bla 35.45672,-162.91938 yadda yadda yadda -6.53197, 132.07407 bla bla";
var matches = input.match(/-?\d (?:\.\d )?,\s*-?\d (?:\.\d )?/g);
console.log(matches);

Once you have isolated the lat/lng pairs in the above string array, it is only a bit more work to obtain separate numbers in whatever format you need.

CodePudding user response：

You could write a regular expression to find the pattern you want and extract it.

In javascript a regular expression can be written as such:

const re = /ab c/;

... where the expression is written between the two forward slashes. The formatting of regular expression are documented extensively in many places.

I have used the MDN resource for documentation on this feature.