dropdown

Chasing some help on this one, unfortunately Javascript is not my forte; I am creating a simple drop down vehicle make, model and year selector which leads through to a link which is created dynamically depending on the users options selected. Effectively the user should be able to select a make and then have a model show up which is associated with that make and finally a year that is associated with the model selected. I have been able to get the make and model selection to work but when I attempt the same thing by adding in the year it starts showing the year in place of the model. Can

I'm completely new to Shiny, so please forgive any mistakes or misunderstandings. I'm creating a Shiny application with Leaflet in R based off of this example . The example works from point data whereas my app works with polygons, which appears to be what is causing me problems. Here is the shapefile I'm working with and here is my full code: library(shiny) library(leaflet) library(sp) library(rgeos) library(rgdal) library(RColorBrewer) library(raster) #pull in full rock country shapefile, set WGS84 CRS countries <- readOGR("D:/NaturalEarth/HIF", layer = "ctry_hif", stringsAsFactors = F,

using primeNg dropdown component, I'm trying to initialized the dropdown with initial value with no success, I'm using reactive approach. I checked the primeNg documentation and demos - almost all the examples there are using template driven, I would like to have the same with model driven. I'm able to render the dropdown with the values in the list but the selected item is not the one I declared in the form, instead it's the first item in the list. my code: template <div [formGroup]="formGroup"> <p-dropdown [options]="results" formControlName="second" (onChange)="onChangeHandler($event)"

I have a code where it disables the button on page load since the value of the dropdown is empty. However, when a value is selected (the values are from the database, it is populated and it is working), the button is still disabled. Jquery: <script> $(document).ready(function(){ $('.send').attr('disabled',true); $('#kagawad').keyup(function(){ if($(this).val() != ""){ $('.send').attr('disabled', false); } else { $('.send').attr('disabled', true); } }) }); </script> html: <div class="item form-group"> <label class="control-label col-md-3 col-sm-3 col-xs-12">Select Kagawad</label> <div class=