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?…
Author: admin@master
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,’…
Exchanging events between React components
I’m making a Chrome extension that inserts 2 different React extensions on to the page. I’d like to keep each of them in sync by sending the 2nd one an event with appropriate data when something else is selected in the first one. Is there a best practice when it comes to sending events to other co…
DOM element to corresponding vue.js component
How can I find the vue.js component corresponding to a DOM element? If I have Is there a vue method equivalent to the jQuery Answer The proper way to do with would be to use the v-el directive to give it a reference. Then you can do this.$$[reference]. Update for vue 2 In Vue 2 refs are used for both
iOS WKWebView not showing javascript alert() dialog
I am having some trouble getting a WKWebView in iOS 8 to display an alert dialog that is called from Javascript. After creating a standard WKWebView and loading an HTML file, I have a button on the page that creates a simple alert with some text. This works in UIWebView and in Google Chrome/Safari, but does n…