I have group collection. In each group document, I store which users are associated with the group via members array field in firebase. Eg: user1 & user2 are in xyz(id) group and I would like to query from client to get all the group where having user1 & user2 ( not OR ). I have tried firebase IN arra…
Tag: javascript
How to get starting plotted date and ending plotted date from DHTMLX Gantt chart
I am using the DHTMLX Gantt chart, Here I need to get the starting plotted date and ending plotted date from the Gantt. For example here start date is 31 Mar 2019 and the end Date is 7 Apr 2019 in the chart, I want this date without taking it from the JSON. Actually, I want to add some more
How to filter by id?
I want to filter stories by ids. I have tried to use .filter method but it is showing me empty array [] Answer You have a few issues: You’re using .story_id when your object is using id You’re trying to check if a number is equal to the array id, this won’t work. Instead, you can use .includ…
Using Javascript to implement Live Django Search
I am adding a Search functionality to my E-commerce Project using Javascript, I have followed a tutorial that explains that when writing the title in the search bar only the items with the same letter appears. In my project, it was working fine for basic HTML but I am trying to make it a little more complex t…
how do I create an alternating stripe pattern with different stripe widths in javascript
I am trying to create a stripe pattern in javascript (p5.js), where the odd stripes are one width and the even are another. If they were the same width, my code to create the pattern would be as follows: but if I were to introduce a barSize1 and barSize2 to create an alternating pattern of bars of different h…
Reverse iteration in a jQuery Object?
Now while I iterate, I want to get ‘s’ first- I have tried test_data.revers() which does not work. Any solution? Answer For a defined order, you could sort the keys of the object and iterate them in descending order of the first value of the array.
How do I Get Copy of Webgl Texture
I have a webgl texture and I store this texture in a javascript variable I want to keep a copy of this texture (texture1) in another variable, not instance. For example for javascript arrays, thanks to the slice function, we can keep a copy of arrays in a variable. How do I do this for webgl textures? Answer …
Adding active class to menu when section changes
when i scroll the page, i want to add class active menu item. i can get the current div id like this var currSection = $(this).attr(‘id’). im stuck with id and data-id matching. here is the codes. ty for helping guys. Answer Change scroll event listener to this
Conjoin Related Objects Into One Object Array? (javascript)
I have some user and permission data that has been queried from my database. I would like the access object for each person to be conjoined with each user object so that when I map through the array in my app on a user permissions page, all the data is easily accessible. Fortunately, my data that needs to be …
Save multiple values to same type in LocalStorage then retrieve the values
My main requirement is to generate a URL by clicking on the relevant button. For example If I click on the green and red button then it should append &_colour=green%2Cred in the url and similar for Gender’s button after saving and getting values from localStorage. example.com/product-category/glasse…