My form reset button doesnt reset my form. I added a class for my dropdowns to be hidden unless theres a change in select. The current behavior is clicking the reset button will only reset its values but doesn’t hide the supposed to be hidden dropdowns. my reset button script i used Can’t find any…
Tag: javascript
Javascript: How to concatenate 2 values treating undefined or null values as empty
This is what I want: Input and output values are given in the comments against each line. Normal concatenation appends “undefined” as a literal string. I want undefined and null values to be treated as empty string Answer You can use the nullish coalescing operator to convert null or undefined to …
Find empty and null values in object and update in a counter javascript
I have the below object and I want to count the empty or null values in the object and update it in a property counter of that object. E.g. I have this below object. The result of iterating through this object would let us know that lastName and age is empty or null, so it should update counter: 2 indicating
How can i find the index of the element of an Array? [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question Here is my code, it gives me undefined i have also tried indexof() method Answer The below c…
MongoDB find by _id
I’m building a Node.JS app, and i have a function that returns all the records if none of the queries were sent and, if sent, it returns all the records satisfying my query. Here’s my code: Why i got an empty array returned when my param is { _id: ‘5f0218093e6f27870a6d5db2’ }? When I&#…
Nuxt + Vuex + Computed Property
I am currently trying Nuxt.js with Vuex. And I Built a simple form, where I have an email field, a password field and a button. All my state, mutations and actions are working as they should be. But When I created a computed property just to validate the password, I always have an error with an if statement t…
TypeError: Order.find is not a function
I am building ecommerce website using MERN stack. And I am getting error while testing using Postman. backend/controllers/user.js backend/models/Order.js backend/models/User.js backend/routes/user.js Error:- TypeError: Order.find is not a function at exports.userPurchaseList (C:UsersRahulMernBootcampprojbacke…
Unable to show helperText once we click on the Submit button using reactjs?
I’m new to this dropdown validations, i want to show helpertext bottom of the dropdown when the dropdown field is selected (or) we have selected but again selected the -1 menu item value. Here I’m facing few issues. Couldn’t able to show red color for helpertext. For me, it is showing error …
Uncaught ReferenceError: parameter_name is not defined
Uncaught ReferenceError: province_name is not defined I’m having this error and I don’t know why, because I have used the same steps with other methods and everything is ok. What I want to do is to pass a parameter on a onclick function in venta.php from venta.js, and when the btn is clicked the i…
Checking for visible items to a caption with jQuery – need different approach
With jQuery I need to check for a caption if there are visible list-items for that caption. Below is my approach, basically checking for li elements with the same class name which are visible, by string concatenating the class names. This is not working for the following reasons: When I use the script fails a…