javascript - HelloJava菜鸟社区

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314浏览

Redirecting a user to a different path in React

问题: I'm building a web app. The user can go and Read some info about an object from Firebase. The problem is the user can also be logged in with an Android app, and if a proper...

小编发布于 2018-07-05 15:31

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293浏览

Regex to remove file path

问题: I want to remove some part of this file path: C:UsersroomDesktopdevmyappnode/data//test/nested/74201820018PM-AI2.jpg I want the path name after the 'data' like /...

小编发布于 2018-07-05 15:30

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296浏览

Change Icon activeIndex via React Native

问题: How to Change Icon activeIndex via React Native? I'm using native-base module, but not work and just activeIndex == 0 is active and my function not work. Code: import {...

小编发布于 2018-07-05 15:30

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321浏览

Alternative for visitor pattern in TypeScript (avoiding instanceof conditionals)

问题: Let's assume I have an interface interface I <T extends InternalResult> { doStuff(): T; } and two concrete classes implementing this interface: class A imp...

小编发布于 2018-07-05 14:22

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292浏览

d3: How to add border to a circle on an if-condition?

问题: I am adding few circles to my d3 graph as below: this.node = this.svg.append('g') .attr('class', 'nodes') .selectAll('circle') .data(graph.nodes) .enter().appe...

小编发布于 2018-07-05 14:22

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326浏览

Polymer paper-tooltip

问题: I need to learn Polymer.js for a project I got assigned to and I'm trying to do some tutorials. I'm trying to use the paper-tooltip element and have created the following...

小编发布于 2018-07-05 14:22

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298浏览

javascript - round up number to nearest 100/1000 depending on number

问题: I have a number that can be in the 2 digits, like 67, 24, 82, or in the 3 digits, like 556, 955, 865, or 4 digits and so on... How can I round up the number to the nearest...

小编发布于 2018-07-05 14:22

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304浏览

npm module stream not found

问题: Since yesterday our tests don't not run anymore. Error: module stream not found After research we found that stream is available as core node module: https://nodejs.org...

小编发布于 2018-07-05 14:21

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1008浏览

Error importing javascript class

问题: Update I replaced import {WaveSurfer} from "js/wavesurfer.js/src/wavesurfer.js" by import WaveSurfer from "./js/wavesurfer.js/src/wavesurfer.js" and it now seems...

小编发布于 2018-07-05 14:21

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272浏览

Ng-model and ng-max same value

问题: I have ng-repeat table with the input field (number), with dynamically data get from API. Problem is ng-model and ng-max here is code <input type="number" ng-model...

小编发布于 2018-07-05 13:14

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278浏览

Creating HTML-Elements with a Button

问题: I want to create a HTML-Element by pressing on a Button on the same page, but the Element won't appear after clicking. my HTML: <button type="submit" name="e-h1" onc...

小编发布于 2018-07-05 13:14

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301浏览

How to parse with column from excel to convert it to JSON

问题: I have tried to display the json value from the table. But it creates the JSON from Excel (Which parse as an row) I would like to parse the excel data as an column wise...

小编发布于 2018-07-05 13:13

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281浏览

Listen to checked input=“checkbox” and split equal percent for input=“text” Javascript Jquery events

问题: There is this code that I am trying to figure out, there are four instances: When I select the first checkbox, it appears 100% on the box from it's right. When the second...

小编发布于 2018-07-05 13:13

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212浏览

See the Angular 6 click bindings in the developer console while in dev mode?

问题: Assume I have a button with the following attributes: <button> class="button" (click)="doStuff()" [ngClass]="{'stuff': selected}"> Push me </bu...

小编发布于 2018-07-05 13:13

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2994浏览

Couldn't find preset “@babel/env” - reactjs

问题: I want to build my application but I got this error message: ERROR in ./src/index.js Module build failed: Error: Couldn't find preset "@babel/env" relative to directory "...

小编发布于 2018-07-05 13:13