Linked Questions
23 questions linked to/from How to check whether an object is a date?
120
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4
answers
91k
views
Is there a way to check if a variable is a Date in JavaScript? [duplicate]
I was wondering if there is any way to check if an object is specifically a Date in JavaScript. isType returns object for Date, which isn't enough for this scenario. Any ideas? Thanks!
- 11.2k
3
votes
1
answer
59
views
Identifying a function name or property in Javascript [duplicate]
I'm using an npm module that throws an empty function i.e. UnauthorizedException upon error. I want to be able to identify the function thrown so i can handle it accordingly
function ...
- 853
2213
votes
56
answers
1.6m
views
Detecting an "invalid date" Date instance in JavaScript
I'd like to tell the difference between valid and invalid date objects in JS, but couldn't figure out how:
var d = new Date("foo");
console.log(d.toString()); // shows 'Invalid Date'
console.log(...
- 76k
92
votes
1
answer
164k
views
Checking if a date is valid in javascript [duplicate]
Possible Duplicate:
Detecting an “invalid date” Date instance in JavaScript
Is there is a function IsDate() in javascript?
- 1,339
8
votes
3
answers
5k
views
Typescript: isNaN not accepting Date Object
const isObjectClass = (value: any, className: any) => (Object.prototype.toString.call(value) === `[object ${className}]`);
export const isDate = (value: any) => isObjectClass(value, 'Date');
...
- 5,001
2
votes
3
answers
7k
views
Getting Date and/or checking for it in JSON Object?
I have a JSON object that can (is) storing a Date (and/or any other JS object) but I'm not sure how to get it out once it's in it. For example I have this sample code, but it's not working:
for(var ...
- 32.9k
4
votes
2
answers
670
views
d3.js filter() not displaying expected results
The filter command is not working as I expected. How would I refactor the code to get the requested output?
In the .filter((d,i) => condition) syntax, d is an object with the x (date/time string) ...
- 3,001
0
votes
2
answers
2k
views
Create a new Date for any specific timezone
I am using Google Apps Script to check and re-format date data from some Google Sheets. But the problem is the result shows the times for the user who run the code. I want to show the date for any ...
- 154
4
votes
2
answers
1k
views
md- datePicker - Date instance error always
I am getting this error The ng-model for md-datepicker must be a Date instance. Currently the model is a: string. I am using moment..
in view
<md-datepicker ng-model="Model.currentContact....
- 398
0
votes
2
answers
2k
views
typeof !== "undefined", comparing dates, new Date, Math.min / What is wrong with this simple js code?
This code is on my nodeJS server. Every time the server gets to it, it crashes. Don't know what's wrong... Could someone help me?
dateArray[11], dateArray[12] and dateArray[13] are either empty or ...
- 1,364
0
votes
2
answers
4k
views
How to use JavaScript to tell if a value is a date
I have a table of data that needs to be sorted and in order to do so, I have to determine the datatype of the columns: numeric, text, or date.
And no, I never know what the datatype of column will be ...
- 121
1
vote
3
answers
985
views
Is there a way to check for just a plain vanilla javascript object as opposed to any other special kind of object (i.e. Date)?
I tried using instanceof but it can't differentiate between {}, [], and Date.
For example, If I want to make an if tree that goes like this:
function foo(someVar){
if (/*someVar is an {}*/) {
} ...
anon
1
vote
2
answers
605
views
Why is date instanceof Date returning false while all other date checks are returning true?
Using: Node, Prisma and Jest.
I have a value that is acting like a Javascript date in everyway other than the instanceof Date check.
Here is the code that I've used to check if it's a date.
const ...
- 1,463
0
votes
1
answer
908
views
Save dates to local storage
Im building a calendar with a synced todo list. I am trying to save a specific date based on the user input to local storage. At the moment the todo is saved to local storage and is presented in a ...
0
votes
1
answer
781
views
Conditionally formatting dates in Angular
I have a property that I am displaying on an angular template which may or may not be a date. If it is a date, I would like to format it but if it's not, I just want to show the value.
This is what ...
- 437