Recent questions tagged javascript

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javascript - how to stream read directory in node.js?

Suppose I have a directory that contains 100K+ or even 500k+ files. I want to read the directory with fs. ... with stream approach. Can I? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - All HTML Tags supported by a Browser

Using JavaScript, is it possible to obtain a list of the tags that a browser supports? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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119 views

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javascript - Remove key from all objects in array

I have the following array of objects: [{id:1, value:"100", name:"dog" ...}, {id:2, value:"200", ... extracts the value only, not the key. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - onbeforeunload in Opera

I'm using the code that netadictos posted to the question here. All I want to do is to display a warning when ... same thing in Opera? Thx, Trev See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - What does the symbol '&$checked' mean

import React from 'react'; import Checkbox from '@material-ui/core/Checkbox'; import { createMuiTheme, makeStyles, ... . Thanks for answering. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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141 views

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javascript - ECMAScript 6 modules in Node.JS

Node.JS v0.11.3 claims to have support for ECMAScript 6 modules with the flag --harmony_modules. I have tried ... modules working in Node.JS? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to display tooltips on jqplot pie chart

I have a jqplot pie chart with a legend and I would like to get the legend text to appear as a tooltip when the mouse ... : 'e' } } ); }); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Grabbing a random line from file

I have no idea on how to do this. Where should I start? I have googled this and not one result came up on ... a random line from a text file? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Type annotation for `this` keyword in Typescript

I have a standalone function that's meant to use the context provided by Function.prototype.call. For example: ... keyword in this scenario? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - How to get a functions's body as string?

I want to know how to convert a function's body into a string? function A(){ alert(1); } output = eval(A) ... make output into alert(1); only??? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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201 views

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javascript - Parentheses while calling a method in Vue

In Vue, why can you assign a listener both with () and without ()? new Vue({ el: "#app", data: { ... > <input @input="changeName"> </div> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - XMLHttpRequest() & net::ERR_NAME_NOT_RESOLVED

I am writing a javascript app that makes an HTTP request of a remote server. The user will enter the host ... correctly noted was of no value. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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195 views

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javascript - Google Maps is grey

I am using google maps in a mobile application using html and javascript. When the I load the map I am only able ... em it doesnt work at all. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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330 views

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javascript - Get color name by HEX or RGB

How can I get a color name using JS/JQuery, knowing the code RBG/HEX? For example: Colorname RGB ... white #FFFFFF red #FF0000 green #008000 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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140 views

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javascript - Programmatically sending keys to input field?

I'm coding a web-portal for a set top box with a custom keyboard. The keyboard has most of the standard ... arrow key) to the input field? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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431 views

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javascript - fetch retry request (on failure)

I'm using browser's native fetch API for network requests. Also I am using the whatwg-fetch polyfill for ... or suggest me an alternative? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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135 views

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javascript - How to display async data in vue template

I'm interesting in the case of displaying in vue template data which loaded asynchroniously. In my particular ... little bit sophisticated :) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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105 views

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javascript - Is It Possible To Set Default Parameter Value On A Rest Parameter

ES6 introduces a bevy of convenient "syntactic sugar". Among them are the default parameter capabilities of ... help is greatly appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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554 views

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javascript - Blank map tiles - Error 410 gone (Mapbox & Leaflet JS)

I am using Leaflet JS and MapBox to create a map. My browser displays as below: The map does not show ... and display the map successfully? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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274 views

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javascript - How to use CSSStyleSheet.insertRule() properly?

I can't figure out where I'm going wrong here :/. When I run this code, all I get is a blank element. I can't ... 0); </script> </body> </html> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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118 views

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javascript - JS async/await - why does await need async?

Why does using await need its outer function to be declared async? For example, why does this mongoose statement ... await so tightly coupled? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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454 views

1 answer

javascript - Replace ,(comma) by .(dot) and .(dot) by ,(comma)

I've a string as "1,23,45,448.00" and I want to replace all commas by decimal point and all decimal points by ... output as "1,23,45,448,00" See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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205 views

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javascript - AngularJS Directive Two-Way Data Binding Not Working When Observing Boolean

I have a two-way data binding that is not altering the value of the variable sent to the directive. My ... the hide/show process is repeated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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122 views

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javascript - requireJS an entire folder

Is it possible to "require" an entire folder using requireJS. For example, I have a behaviors folder with a ... to work with them individually. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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122 views

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javascript - Property name on object from variable

Is there a way in typescript to set a property name from a variable? Something like this export function objectFactory( ... valid: false } }; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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505 views

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javascript - Edge: SCRIPT1028: Expected identifier, string or number

My page works fine in Chrome and Firefox: However, when I try to load this page in Edge, the questions and answers ... ; } How do I fix this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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647 views

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javascript - canvas.toDataURL results in solid black image?

I have a canvas element with some doodling in it. I am using the following to convert the canvas to a jpeg: ... what I'm doing wrong? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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javascript - How can I determine whether a given string represents a date?

Is there an isDate function in jQuery? It should return true if the input is a date, and false otherwise. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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