Questions tagged as 'javascript'

Tagged questions
2
answers

How to display a PDF in the browser with an ajax request?

I make a request like this: $.ajax({type : 'GET', url : URL_APP_CONSULTA_BOLETO_DIVIDA_ATIVA + url}); I have a java method that returns something like this: return (Response.ok(output).header("content-disposition", "attachment; filename =...
asked by 20.02.2014 / 16:00
2
answers

How to send an Array via POST to a PHP controller

I need to pass an array via POST to my PHP controller, the only way I have in mind is not to pass an array, but to pass the information through a separator (,; |), but I did not want to have to keep blowing up the other side (Controller). At...
asked by 27.02.2014 / 22:06
2
answers

How do I check real-time registration?

I have a registration system that I need to verify in real time if the email exists in the database. But the same is not working, in <div id="resposta"></div> does not display any result. JavaScript <script langua...
asked by 09.08.2018 / 23:57
1
answer

Asynchronous function chaining alternatives

I need to make 3% with%. One in each table, and its exact result to use in the%% of% remaining. In the original application, I do a lot of manipulations in the result of each query, which leaves a lot of content, so I summarize my problem in...
asked by 15.07.2016 / 13:16
1
answer

What is the role and responsibility of HTML, CSS and JavaScript technologies when creating the front end?

With these three technologies HTML, CSS and JavaScript can be developed all front-end or client-side of a particular site. So, I would like to know what role and responsibility each of these technologies mentioned above plays in creating t...
asked by 17.04.2016 / 18:36
2
answers

How to change image when clicking? [duplicate]

I have a course work and I had the following idea: There are several images that will represent the chairs of a cinema (all are the same images, the same are in my HTML file), and I want to make the effect of when the user clicks on one of...
asked by 19.01.2017 / 20:02
2
answers

Count black pixels of an image region

I have the following question: I have a script that I can select the coordinates of an area of an image: link Considering that I have a binária ( black and white ) image, how do I count the amount of black pixels in a certain...
asked by 11.10.2016 / 00:28
2
answers

What is the value of \ 1 in the regular expression in javascript?

I was taking a look at this response from @Sergio here on the stackoverlow: link There was a snippet of code like this: /^(\d)+$/.test(111) What exactly does do in this regular expression?     
asked by 22.10.2015 / 21:54
3
answers

Show and hide content in list form. with Javascript

I'm trying to make a list of Youtube videos as follows. (ps:Eu sei que o Youtube ja tem uma playlist dele.) Example: List with video names. 1 - Trailer Reaction: Star Wars: Episode VII - The Force Awakens 2 - Star War...
asked by 13.12.2015 / 00:57
2
answers

AJAX Javascript Pure Asynchronous

I am trying to retrieve a data coming from Ajax to use in another function, but I am not succeeding. In jQuery I do this using a parameter called async: false . But in pure JS I can not do it. The parameter is false in the .op...
asked by 10.03.2016 / 12:16