I have a nested data structure containing objects and arrays. How can I extract the information, i.e. access a specific or multiple values (or keys)? For example: var data = { code: 42, items: [{ id: 1, name: 'foo'...What is the most efficient way to clone a JavaScript object? I've seen obj = eval(uneval(o)); being used, but that's non-standard and only supported by Firefox. I've done things like obj = JSON.parse(JSON.stringify(o)); but question the...
If I create an object like this: var obj = {}; obj.prop1 = "Foo"; obj.prop2 = "Bar"; Will the resulting object always look like this? { prop1 : "Foo", prop2 : "Bar" } That is, will the properties be in the same...Can someone suggest a way to compare the values of two dates greater than, less than, and not in the past using JavaScript? The values will be coming from text boxes....
A strict equality operator will tell you if two object types are equal. However, is there a way to tell if two objects are equal, much like the hash code value in Java? Stack Overflow question Is there any kind of hashCode function in JavaScript?...
If I have a reference to an object: var test = {}; that will potentially (but not immediately) have nested objects, something like: {level1: {level2: {level3: "level3"}}}; What is the best way to check for the existence of property in...If I have a JavaScript object such as: var list = { "you": 100, "me": 75, "foo": 116, "bar": 15 }; Is there a way to sort the properties based on value? So that I end up with list = { "bar":...I'm pulling items out of the DOM with jQuery and want to set a property on an object using the id of the DOM element. Example const obj = {} jQuery(itemsFromDom).each(function() { const element = jQuery(this) const name = element.attr(&...The behaviour can be seen in this little snippet (execute it as a global script): var name = {}; name.FirstName = 'Tom'; alert(name.FirstName); The alert yields undefined in Chrome but works in IE and Firefox. I also get a weird value wh...If I have a JavaScript object such as: var list = { "you": 100, "me": 75, "foo": 116, "bar": 15 }; Is there a way to sort the properties based on value? So that I end up with list = { "bar":...©2020 All rights reserved.