“Javascript Access Nested Property by string” Respostas de código

Javascript Access Nested Property by string

Object.byString = function(o, s) {
    s = s.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties
    s = s.replace(/^\./, '');           // strip a leading dot
    var a = s.split('.');
    for (var i = 0, n = a.length; i < n; ++i) {
        var k = a[i];
        if (k in o) {
            o = o[k];
        } else {
            return;
        }
    }
    return o;
}

Usage:

Object.byString(someObj, 'part3[0].name');

// Credits: https://stackoverflow.com/questions/6491463/accessing-nested-javascript-objects-and-arrays-by-string-path