Recent questions tagged JavaScript

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javascript - "Paste" event in Angular [ngPaste]

How to execute a function on "Paste" event in input in Angular 1.1.5? I know there is a ng-change ... .0, ngPaste is a native directive. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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163 views

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javascript - What is the purpose of the anonymous function wrapper in jQuery?

jQuery starts off wrapping all of it's code in an anonymous function: (function ( window, undefined) { /* ... there is context that would help? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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194 views

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javascript - How to identify when the DOM has been changed?

Is there a simple way to know when the DOM has been changed ? Is there any built-in JavaScript/jQuery event/function for this ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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138 views

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javascript - Why not eval() JSON?

As far as I know it is considered bad practice to eval() JSON objects in JavaScript, because of security. I can ... to eval() for IE/Opera. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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114 views

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javascript - How to parse JSON to object with lower case key

I have some JSON data but all the keys are in UPPER case. How to parse them and convert the keys to lower? I ... : {id:1234, content:"HELLO"} See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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156 views

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javascript - Using Array.map with new Array constructor

I was trying to use new Array() constructor with map in order to create a one-line code that creates a list of elements ... ); return i + 1; }); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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402 views

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javascript - Server Sent Event / EventSource with node.js (express)

I'm trying to send JSON data to the browser with SSE but I can't seem to get it right and I don't know ... the console logs but not the alert. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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292 views

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javascript - Why are myarray instanceof Array and myarray.constructor === Array both false when myarray is in a frame?

So the following code alerts false twice: window.onload = function(){ alert(window.myframe.myarray instanceof Array); ... know why this is? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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629 views

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javascript - NodeJS: Validate certificate in DER format

I'm using crypto module to validate a certificate, but both, my certificate and my public key are in DER format. ... you are not able to help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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336 views

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javascript - YouTube IFrame API play method doesn't work before touch on some Android tablets

We're developing a YouTube player and are using the IFrame API. Everything works really nice except on our Android 4. ... what to do about it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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143 views

1 answer

javascript - Handling linking accounts in Firebase

I am following Firebase's instruction on social login. Below is an example of what I am using and it is ... click', toggleFBSignIn, false); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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121 views

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javascript - When to use .bind() in JS

There is a ton of blogs and posts about how to use bind() and how it's different than call() and apply ... the Person object. Any good examples? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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528 views

1 answer

javascript - Why is the statusText of my XHR empty?

When I perform an XHR on our production system, the statusText in the response will be an empty string. ... the statusText actually determined? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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265 views

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javascript - Fetch, set-cookies and csrf

I m using Isomorphic fetch in my application and I m having some troubles dealing with CSRF. Actually, I m ... request x-csrf-token header ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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214 views

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javascript - Bluebird Promise serial iteration, and resolve to modified array?

I have this promise that creates a new Item document if it's not found in the db, and then stores it ... renders undefined in a Promise.join? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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333 views

1 answer

javascript - SlickGrid select editor

I want to make a dynamically populated html select for a select cell. I extract some information from a database which is ... }; this.init(); }; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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485 views

1 answer

javascript - Dynamically adding a SVG gradient

I have this SVG container with paths. I want to edit it, so the paths' fill will be a pattern. This is my ... doesn't work. What am I missing? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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122 views

1 answer

javascript - Get final size of background image

is there an easy way to get the final height and width of a background image with Javascript or jQuery ... someone changed the background-size See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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195 views

1 answer

javascript geolocation on android doesn't work

I am developing a website that relies on pulling the geolocation data of a mobile user. I am doing it ... last location provider was disabled' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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387 views

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javascript - How to dynamically add class when I select option

I want to dynamically add class for this selected class. HTML : <select name="number" id="paragraphSpaceOPtion"> ... name when I select option. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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384 views

1 answer

javascript - Send multipart/formdata with jQuery.ajax in IE

Is there a way to do the following solution in Internet Explorer? (IE7 and up) link: Sending multipart/formdata ... in every browser but IE. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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150 views

1 answer

javascript - jQuery .attr('value', 'new_value') not working?

I am trying to dynamically change the actual HTML value attribute of an input using jQuery. Although using ... HTML attribute is unchanged. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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581 views

1 answer

javascript - Downloaded PDF looks empty although it contains some data

I'm trying to implement a PDF file download functionality with JavaScript. As a response to a POST request I get ... doesn't display any data? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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335 views

1 answer

javascript - How to clear specific line in Canvas : HTML5

I am totally new to this Canvas Element. I am able to draw line in canvas, but not able to clear only ... Fiddle: http://jsfiddle.net/8YNvu/ See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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354 views

1 answer

javascript - Why does .fireEvent() not trigger in IE9?

Rather frustrating time here with IE9. This code works in IE7/8, but not 9. document.getElementById('id').fireEvent ... ; Any insight as to why? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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504 views

1 answer

javascript - lodash filter on key with multiple values

I am trying to find out in lodash javascript library, how to find out filter array of objects multiple ... numbers can also change runtime See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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246 views

1 answer

javascript - Create chain in lodash with custom functions

Is there way to get my own custom function in a chain of lodash. So for example like this: var l = [1,2,3] var add ... }).add(5).value() =>r = 7 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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152 views

1 answer

javascript - Define getter on object so all undefined property lookups return ""

Basically I need to be able to do this: var obj = {"foo":"bar"}, arr = []; with( obj ){ arr ... is different than a property that is undefined). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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