Find all numbers

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Write a regexp that looks for all decimal numbers including integer ones, with the floating point and negative ones.

An example of use:

 
             let regexp = /your regexp/g;

let str = "-1.5 0 2 -123.4.";

alert( str.match(regexp) ); // -1.5, 0, 2, -123.4

A positive number with an optional decimal part is: \d+(\.\d+)?.

Let???s add the optional - in the beginning:

let regexp = /-?\d+(\.\d+)?/g;

let str = "-1.5 0 2 -123.4.";

alert( str.match(regexp) );   // -1.5, 0, 2, -123.4