Questions tagged as 'html'

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I have a problem with my calculator

I have the following problem: The $ re variable does not work for me as I seek to do so. I try to get the variable $ re to obtain the values corresponding to the operation that the user establishes, either by addition, subtraction ... etc. Th...
asked by 03.12.2018 / 02:26
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HTML5 Storage supports 5MB per variable or per web page?

I have a question, I am starting to use the localStorage HTML web storage but I do not understand if the capacity it accepts is per web page or per varible. I hope you can get me out of doubt, thank you very much.     
asked by 31.08.2018 / 05:59
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problem with try catch [duplicate]

I am doing a login that validates the users but I have problems with the try catch and I do not know what is due. My code is as follows: <?php try{ $base=new PDO("mysql:host=localhost; dbname=trabajofinal" , "root", ""); $base->setA...
asked by 16.04.2018 / 20:02
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How to use a path of a file to load it in a variable in javascript?

I am making a web page and I want to always take a txt that I have in the root folder and load it in a variable to then manipulate the data of that txt without having to load it with a control input. That this route is always fixed and that it i...
asked by 19.04.2018 / 15:27
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How to make an INPUT only accept some characters [closed]

How to make an INPUT only accept some characters. For example, I want to accept the numbers from 0 to 9 and only some special characters. If the entered character is not allowed, it is not marked in the input. Thank you very much for your...
asked by 02.11.2018 / 14:49
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input email with default @ jquery

I need to create an input email that will keep the "@" character by default and without being able to erase in addition to writing in front of the "@" and behind it, can this be done? thank you very much <script src="https://ajax.goog...
asked by 24.08.2017 / 19:30
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Question TEMPLATES html5 css js [Urgent help] [closed]

Good evening, I have some doubts that I hope some of you can help me solve! - My dad has a language institute, with 450 almunos, he gives online courses etc, the page is used a LOT, but the page is PESIMA (www.iesdr.edu.ar) What I had in mind...
asked by 20.01.2018 / 08:54
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Problems with border-radius property in table

Hello, I have a table and there is no way to show the border radius property in browsers (chrome and firefox). Only in the internet explorer can I see the effect. Anyone who can help me with this? Thanks .tabla_recibido td:first-child...
asked by 23.01.2018 / 16:11
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Why do not you give me the style of my e.target element?

I do not read the style property of my element when I click, only if I insert the style in the html, if I do it in the css it does not work for me. Thanks //// MOUSE EVENTS => let body = document.getElementsByTagName('body')[0]; //se...
asked by 18.12.2017 / 12:26
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How can I recognize the property .value of a DOM object [closed]

var texte = document.getElementById("texto_lineas"); var boton = document.getElementById("botoncito"); boton.addEventListener("click", dibujoPorClick ); var d = document.getElementById("dibujito"); var lienzo = d.getContext("2d"); va...
asked by 26.11.2017 / 18:55