I am learning javascript and I want to initialize a boolean array in javascript. I tried doing this: But it doesn’t work. After googling I only found this way: But I find this a very difficult way just to initialize an array. Any one knows another way to do that? Answer You were getting an error with th…
Tag: javascript
ng-click not working with ng-if
Why does the second button not work, when ng-if is used? I want to realize a button that is present only when the model value is set / not “”/ not null. Template: Controller: To play around: JSFiddle Answer Use ng-show Instead of ng-if. That should work. Fiddle
jQuery events function for ‘html’ but not CSS
Nothing happens. No errors in the console are shown. No matter what event – click, hover, etc – they only work if I apply them to the ‘html’ tag. First part of the code works perfectly, I mean the .css. What kind of sorcery is this? Answer Grrr… I figured it out. The whole code n…
Javascript object bracket notation ({ Navigation } =) on left side of assign
I haven’t seen this syntax before and am wondering what it’s all about. The brackets on the left are throwing a syntax error: unexpected token { I’m not sure what part of the webpack config is transforming or what the purpose of the syntax is. Is it a Harmony thing? Can someone enlighten me?…
Javascript Regex – Get All string that has square brackets []
I have string data below: I need to get all strings that contain square brackets []. This is the result that I want. I’ve tried using regex /[(.*?)]/, but what I’ve got is an only the first array element is correct, the next elements are basically the same value but without the square brackets. Wh…
Solve Cross Origin Resource Sharing with Flask
For the following ajax post request for Flask (how can I use data posted from ajax in flask?): I get a Cross Origin Resource Sharing (CORS) error: I tried solving it in the two following ways, but none seems to work. Using Flask-CORS This is a Flask extension for handling CORS that should make cross-origin AJ…
Listen for changes with localStorage on the same window
I want to listen for changes that are happening in the localStorage API on the same page (Not in multiple tabs like the spec says). I am currently using this code: Does anyone know a vanilla JavaScript way to listen to events on localStorage on one page (no jQuery) Answer Since JS is dynamical language just r…
Pure Javascript listen to input value change
Is there any way I can create a constant function that listens to an input, so when that input value changes, something is triggered immediately? I am looking for something using pure javascript, no plugins, no frameworks and I can’t edit the HTML. Something, for example: When I change the value in the …
Check if all inputs are empty
I have multiple inputs on my page, when any them are filled, an “info div” appears on the side; Now if all the inputs are manually cleared (on keyup), I need to hide that “info div”. How can I check (on keyup) that all of the inputs are empty at the same time? Cheers Answer Loop throug…
MomentJS – How to get last day of previous month from date?
I’m trying to get last day of the previous month using: Where: But after using it returns date But last day of the 10’th month is 31. How can I solve i please? Many thanks for any help. Answer Simply add a endOf(‘month’) to your calls: var dateFrom = moment(dateFrom).subtract(1,’…