Recent questions tagged Javascript

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javascript - JQuery show and hide div on mouse click (animate)

This is my HTML code: <div id="showmenu">Click Here</div> <div class="menu" style="display: none;"> <ul> <li> ... ).slideUp("fast"); } ); }); 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 - Spam Prevention/Reduction - Contact Form?

I want to add a simple Contact form to my web site so that customers can contact me easily. <form> NAME < ... could use for my Contact form. 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 - clearing circular regions from HTML5 Canvas

It appears the only way to clear a region from a canvas is to use the clearRect() command - I need to ... ) clear circles for mask purposes? 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 insert space every 4 characters for IBAN registering?

I'm really new in JavaScript and I would like to add to my input text, space insertion for IBAN account registering. < ... .substr(0, 34);}" /> See Question&Answers more detail:os...

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

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329 views

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javascript - async await in image loading

Temp.js export default class Temp { async addImageProcess(src){ let img = new Image(); img.src = src; return ... don't understand what I missed. 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 - JQuery $.ajax() post - data in a java servlet

I want to send data to a java servlet for processing. The data will have a variable length and be in key/value ... wrong or what am I missing? 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 - Return multiple elements inside React.render()

I am new in react and I encountered with this problem: render: function(){ return ( <h3>Account</h3> <a href ... in that way.. Any suggestion ? See Question&Answers more detail:os...

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

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712 views

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javascript - How to set image to fit width of the page using jsPDF?

Is there any way to solve this? I tried to set width and height in mm. How can I set it to full-width? 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 - return false the same as return?

Is return false the same as: return 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 - The use of the triple exclamation mark

Looking through the source code of one of our projects, I've found some amount of places where we're using ... some rare (or obvious) case? See Question&Answers more detail:os...

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

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507 views

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javascript - How to disable submit button once it has been clicked?

I have a submit button at the end of the form. I have added the following condition to the submit button: ... pass and null values are passed. 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 - Is there any reason to use a synchronous XMLHttpRequest?

It seems most everyone does asynchronous requests with XMLHttpRequest but obviously the fact that there is the ability ... that valid reason be? See Question&Answers more detail:os...

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

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409 views

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javascript - JSLint: was used before it was defined

Hi I have the 3 javascript files. jquery.js utility.js file1.js In file1.js I have jQuery.noConflict() jQuery( ... is the best solution to 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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336 views

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javascript - How can I change the current URL?

I have the following code that changes the pages from within JavaScript: var newUrl = [some code to build up ... the browser back button works. See Question&Answers more detail:os...

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

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496 views

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javascript - Subscribe to observable is returning undefined

So I am trying to subscribe to a simple service that return data from a local JSON file. I have managed to ... this.informationData; }); } } See Question&Answers more detail:os...

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

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334 views

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javascript - Google Maps API and KML File LocalHost Development Options

The Google Maps JavaScript version 3 API library documentation clearly explains: The Google Maps API supports the ... generated KML files? See Question&Answers more detail:os...

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

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464 views

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javascript - Truncate paragraph first 100 character and hide rest content of paragraph to show/hide rest contenct with more/less link

I have paragraph which has more than 500 character. I want to get only initial 100 character and hide rest of it. ... shortText.wrap('</span>'); See Question&Answers more detail:os...

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

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411 views

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javascript - jQuery - bind event on Scroll Stop

If i want to bind an event on page scrolling i can use scroll();. But how to fire when scroll() is ended ... /do somenthing else }); any ideas? See Question&Answers more detail:os...

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

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370 views

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javascript - How do you make images load lazily only when they are in the viewport?

I am seeing a lot of sites these days, mainly tutorial sites that have a lot of images and they only load ... were below the viewport fade in See Question&Answers more detail:os...

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

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367 views

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javascript - Sequelize: Using Multiple Databases

Do I need to create multiple instances of Sequelize if I want to use two databases? That is, two databases on ... way to achieve this? 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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436 views

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javascript - Dynamically resize the d3 tree layout based on number of childnodes

From this example http://mbostock.github.com/d3/talk/20111018/tree.html I have build a d3 tree layout where the ... nodes of the d3 tree layout. See Question&Answers more detail:os...

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

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560 views

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javascript - Match non printable/non ascii characters and remove from text

My JavaScript is quite rusty so any help with this would be great. I have a requirement to detect non printable characters ( ... "); } }); }); See Question&Answers more detail:os...

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

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327 views

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javascript - Wait for image to be loaded before going on

I'm developing a game using JavaScript and canvas. As the game loads, all images that will be used are being ... advance for you help! J. See Question&Answers more detail:os...

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

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312 views

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javascript - Drawing lines on html page

How can we draw a line in html page. I tried using canvas but found that its not working. Maybe browser doesn ... Can there be other easier way. See Question&Answers more detail:os...

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

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380 views

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javascript - Usage of Hash(#) in URL

I was wondering is there any use of hash other than as an anchor in URL. I read about it here getting ... for the client? Please help. See Question&Answers more detail:os...

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

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367 views

1 answer

javascript - Electron IPC and nodeIntegration

So, I've followed a number of guides to set up Webpack, Electron, and React to make a desktop application ... know, otherwise thanks in advance. See Question&Answers more detail:os...

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

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474 views

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javascript - Chrome Extension get selected text

I am looking for a way to get the selected text into my Chrome extension. I want to ex. select a text in ... give me exactly what I want.. See Question&Answers more detail:os...

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

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244 views

1 answer

javascript - When to use promise.all()?

This is more of a conceptual question. I understand the Promise design pattern, but couldn't find a reliable ... reject if even one rejects. See Question&Answers more detail:os...

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

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