Converting a map stored in hiddenput to JSON in JS

Question

I am storing a Hashmap in JSP in a hiddeninput element

How can I parse it into a JSON object in my javascript??

When i print the hidden input variable value in my JS output is something like this:

{zipcode=560036, fmid=xyz, quantity=1}

Answer 1

It is better to pass a JSON string from server so you can easily parse. If you have a simple object structure like this (your example) you can try split it and take eack key/value pair. here is a example

var mapAsStr = "{zipcode=560036, fmid=xyz, quantity=1}";
var convertToObj = function(str) {
    var obj = {};
    str.replace(/\{|\}/g, '').split(',').forEach(function(pair) {
        var keyVal = pair.split("=");
        var key = keyVal[0].trim();
        var val = keyVal[1].trim();
        val = isNaN(val) ? val : parseFloat(val);
        obj[key] = val;
    });
    return obj;
}
console.log(convertToObj(mapAsStr));

But note you can proceed with this only if you have a flat object structure with primitive values.