I have an array of objects like the following: I need to add up all the values for objects with the same name. (Probably also other mathematical operations like calculate average.) For the example above the result would be: Answer First iterate through the array and push the ‘name’ into another ob…
Author: admin@master
Google Maps API v3 Heatmaps Error: “Cannot read property ‘HeatmapLayer’ of undefined”
I am trying to load a Heatmaps layer onto my google maps, but for some reason I just keep getting the error “Cannot read property ‘HeatmapLayer’ of undefined.” Here is the jsFiddle: http://jsfiddle.net/9HQ2a/3/ Answer Add the visualization library to the URL when loading the google map…
Leaflet circleMarkers don´t show up
I am trying to draw hundres of circleMarker in a Leaflet map, I am using flask and foundation.js, the same code work in different app built with bootstrap.js This is my code: At the bottom I tried a fixed marker which appears and fixed circle which doesn´t, could it be a problem with foundation.js? Because in…
How to set cell width when export .xlsx files with js-xlsx
I am trying to set a fixed column/cell width to my exported excel files with js-xlsx. EDIT: Here is the source of js-xlsx: https://github.com/SheetJS/js-xlsx Answer I found a snippet the the write test here https://github.com/SheetJS/js-xlsx/blob/master/tests/write.js#L14-L19 For quick reference, where ws is …
Issue with calling parent of object onClick
Having a problem with this one-page site where the idea is you click on the links and a box slides down but it also needs a close function to bring it back up. Problem is the close button is in the element to be animated, so it needs to be called by its’ parent, I presume. I’ve tried a variety
Jquery ajax returning 404 not found
I’m using Ajax to pass my form data and files to a PHP file for processing. Javascript: ValidateApplication.php definitely exists. I can view it if I type in the address into the web browser, however when I submit the form chrome console returns 404. The PHP is in the same folder as the HTML page the Ja…
how to add markers with OpenLayers 3
I’m trying to add makers on a OpenLayers 3 map. The only example I have found is this one in the OpenLayers example list. But the example uses ol.Style.Icon instead of something like OpenLayers.Marker in OpenLayers 2. First Question The only difference would be that you have to set the image Url but is …
Slide down animation from display:none to display:block?
Is there a way to animate display:none to display:block using CSS so that the hidden div slides down instead of abruptly appearing, or should I go about this a different way? And a JSFiddle Answer Yes, there is a way: http://jsfiddle.net/6C42Q/12/ By using CSS3 transitions, and manipulate height, rather than …
Detect mouse direction – JavaScript
This is how I detect the mouse direction and it works so good but it works only on Chrome, how I can make this compatible with other browsers (Firefox, Opera and at least ie8+ or ie9+). No jQuery please. Answer Stick with pageX and define oldx in a higher scope, otherwise it’s always zero FIDDLE
How to strip type from Javascript FileReader base64 string?
I’ve got the following code in my Javascript: This shows me the following data: The thing is that I only want the part after the comma. I tried getting it from reader.result.value, reader.result.valueOf() and some other combinations, but can’t find the correct one to JUST get the base64 string sta…