Is there a difference between new Date(..).getTime() and moment(..).valueOf() in momentJS?

new Date(..).getTime() is expected to provide a timestamp in milliseconds. In the documentation of momentJS, it states that the expression moment(..).valueOf() should also yield a timestamp in milliseconds for a given date.

To verify this claim, I conducted a test with the following sample data:

var timeStampDate = new Date("2015-03-25").getTime(); //timestamp in milliseconds?
    > 1427241600000
    var timeStampMoment = moment("03-25-2015", "MMDDYYYY").valueOf(); //timestamp in milliseconds?
    > 1427238000000

It turns out that the results were not identical.

Therefore, I am currently seeking a function within momentJS that can produce the exact same data as new Date(..).getTime().

javascriptmomentjs

Answer №1

The Date constructor function explained in the documentation utilizes the UTC timezone for interpreting arguments in ISO 8601 format that lack timezone information.

On the other hand, when using the moment constructor as per its documentation, unless a timezone offset is specified, parsing a string will result in a date being created in the current timezone.

Interestingly, specifying the timezone in the moment constructor produces behavior similar to the Date constructor:

var timeStampMoment = moment("03-25-2015 +0000", "MM-DD-YYYY Z").valueOf(); //> 1427241600000

Answer №2

When passing the same value to Date and moment functions (especially in Chrome over the years), you will receive identical values from both.

new Date("2015-03-25").getTime()
1427241600000
moment("03-25-2015", "MMDDYYYY").valueOf()
1427259600000
new Date("03-25-2015").getTime()
1427259600000

What you encountered was simply a variation in the guessed Date format with Date.parse

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

The button labeled "modify layout" remains unresponsive when activated

Allow me to start by saying that I am not a coding expert. Currently, I am enrolled in a computer science class and have a basic understanding of HTML, CSS, and some Javascript. However, I have encountered a problem that I cannot solve. When I click on th ...

javascripthtmlfunctiononclick

What improvements can be made to optimize this SQL query and eliminate the need for an additional AND statement at the end

I am working on dynamically constructing a SQL query, such as: "SELECT * FROM TABLE WHERE A = B AND C = D AND E = F" Is there a more efficient way to construct this SQL query without adding an extra AND at the end? Here is my current code snippet: le ...

javascriptnode.jsregexpostgresql

What's the reason that app.use(app.static(...)); isn't functioning properly?

As someone who is new to programming, I am currently exploring Javascript, node.js, and express. I came across a question regarding the usage of app.use(express.static(path.join(...))); versus app.use(app.static(path.join(...)));. const app = express(); co ...

javascriptnode.jsexpress

Using a function as an argument to handle the onClick event

I have a function that generates a React.ReactElement object. I need to provide this function with another function that will be triggered by an onClick event on a button. This is how I call the main function: this._createInjurySection1Drawer([{innerDra ...

javascriptreactjstypescript

Utilize HTML strings to serve static files in express.js

While I primarily focus on frontend development, I often face challenges when working on the server side. Currently, I have a server.js file that includes: const express = require('express'); const http = require('http'); const path = ...

javascriptnode.jsreactjsexpress

Are JavaScript Object notation and proper JSON the same thing?

When I execute valid JSON in the Chrome console: {"aaa":"bbb"} I encounter this error: SyntaxError: Unexpected token : But if I try something like this instead: {aaa:"bbb"} No error is thrown. Additionally, when running the following code ...

javascriptjson

Discover the steps to showcase a specific option from a select list at the top row through VueJs

Below is the code to iterate through the elements of teamLeaderOfWithDescendants <option :value="item.user_id" v-for="item in teamLeaderOfWithDescendants"> {{item.user_full_name}} </option> Is there a way to prioritize the row where item.u ...

javascriptvue.jsvuejs2

Ways to retrieve information from JSON

I am currently trying to access the values of an object that is within an array which is inside another object. The data is structured as follows: [{ "id": "99a4e6ef-68b0-4cdc-8f2f-d0337290a9be", "stock_name": "J ...

javascriptjsonaxiosjavascript-objects

Is it possible to incorporate knockout.js within a Node.js environment by utilizing .fn extensions in custom modules?

I'm currently exploring the possibility of implementing the knockout.mapping.merge library in node.js, but I seem to be facing a challenge when it comes to extending ko objects within the module's scope. I am struggling to figure out how to exten ...

javascriptnode.jsknockout.jsnpmnode-modules

Troubleshooting connection timeouts between node.js and amqp

In my project, I am utilizing RabbitMQ through the AMQP module in Node.js with 2 producers and 2 consumers. Here is the code snippet for establishing connections for the consumers: function init_consumers( ) { console.log( 'mq: consumers connect ...

javascriptnode.jsrabbitmqamqp

Angular 6 tutorial: Creating a dynamic side navigation bar with swipe and drag functionality using Angular Material/Bootstrap

I am currently working on implementing a vertical swipeable/stretchable side nav-bar with angular-material in angular 6. However, I have encountered an issue with mouse interactions for stretching the nav-bar. Below is the code snippet: Here is the HTML c ...

javascriptangularbootstrap-4angular-material2sidebar

Navigate between pictures using hover in jQuery

I am working on creating a feature where images cycle through individually every 2 seconds, but switch to the right image when its associated link is hovered. So far, I have managed to make the images show up on hover, but I am struggling with getting them ...

javascriptjquerycss

Make a tab the active tab within the Material-UI tab component

For the current project, I have decided to utilize Material UI as the primary library. One of the pages in the project requires four tabs, which I am implementing using the tab component from the Material UI library. By default, when rendering the page wi ...

javascriptreactjstabsmaterial-ui

Implementing server-side validation measures to block unauthorized POST requests

In my web application using angular and node.js, I am in the process of incorporating a gamification feature where users earn points for various actions such as answering questions or watching videos. Currently, the method involves sending a post request t ...

javascriptnode.jsangularjs

Sending an array encoded in JSON to jQuery

I'm attempting to send an array that I've created in PHP using json_encode(). The process involves running an AJAX request, as shown below: AJAX CALL: $.ajax({ type: "POST", url: "../includes/ajax.php?imagemeta=1", data: ...

javascriptphpjqueryajaxjson

Is it possible to implement the splice() method within a forEach loop in Vue for mutation

Hey there! I'm looking for a more efficient way to replace objects that match a specific index with my response data. Currently, I'm attempting to use the splice() method within a forEach() loop in Vue.js. However, it seems to only remove the obj ...

javascriptarraysvue.jsvuex

Load Jquery hover images before the users' interactions

Currently, I am in the process of creating a map of the United States. When hovering over any specific state, my goal is to replace the image with one of a different color. The issue I am encountering lies in the fact that the image gets replaced and a ne ...

javascripthtmljquerycssjquery-events

Learn how to creatively style buttons with dynamic effects using tailwindcss

My Desired Button: I have a Button component that can accept a variant prop. My goal is to have the button's className change dynamically based on the prop passed to it. Instead of using if/else statements for different buttons, I want to use a sing ...

javascriptreactjstypescripttailwind-css

Setting up Quill in a Nuxt project (a VUE component)

I'm struggling to remove the toolbar in Quill despite my efforts. This is the HTML snippet I am working with: <template> <quill v-model="content" :config="config"></quill> </template Here's what I have inside the scri ...

javascriptvue.jsnuxt.jsquill

Troubleshooting the non-functional asynchronous function

After starting to use redis with node (specifically the node_redis module), I decided to wrap my retrieval code for debugging and DRY principles. However, I encountered an issue where my new function wasn't working as expected. As someone who is stil ...

javascriptnode.jsasynchronous