JSFiddle - React, Tailwind, and code Playground

JavaScript

var jsonLikeString = "name:red, type:blue, multiples:green, cat:brown";

var jsObject = {};

var stringWithoutSpaces = jsonLikeString.split(' ').join('');
var splitStrings = stringWithoutSpaces .split(",");
kvPairArray =[];

for(var i in splitStrings){
    if(splitStrings.hasOwnProperty(i)){     
        var kvPair = splitStrings[i];
        var kvPairArray = kvPair.split(":");
        jsObject[kvPairArray[0]] = kvPairArray[1];
        
    }
}
alert(jsObject.cat);