Form type number php

input ( type=number ) element

If you don’t know what an element is or how you must use it, I recommend you read the » HTML tags and attributes» tutorial that you can find in the HTML tutorials section.

Description

The input element, having the «number» value in its type attribute, represents a field for a number input. In modern browsers number fields are usually represented by controls that enable users to change its value in a graphical way, instead of having to input it directly as a string.

Upon submission, supporting browsers convert the input data into a string representing a number. The rules to compose a valid number are described below.

Números

La sistaxis de un número está compuesta por:

1. Opcionalmente, un signo menos o guión («-«).
2. Uno de los siguientes o ambos, en el orden dado:
   1. Uno o más dígitos.
   2. Un punto («.») seguido de uno o más dígitos.
   1. Una letra E (mayúscula o minúscula).
   2. Opcionalmente un signo menos o guión («-«).
   3. Uno o más dígitos.

   Browser support for number fields is incomplete. To improve compatibility, authors may have to rely on scripts to provide advanced controls and to check values conformance before submission.

   The min and max attributes may be used in this element to set a range of valid times the user will be able to submit.

   Examples

   In the first example we’ll only create a form with a number control. Here you’ll be able to note the functionality provided by your browser (if any) for the control.

   Note that this control only accepts integer numbers. This behavior will be changed in the second example by using the step attribute.

     action="../../form-result.php" method="post" target="_blank">   Your age:  type="number" name="age">  type="submit" value="Send data">   

   In our second example we’ll provide a list of suggested values using the datalist element, so the user can quickliy pick up one of the predefined values when the browser suggests them. The control will be linked to the datalist because of the matching between the id attribute in the list and the list attribute in the control.

   To make this example work properly, we’ll set the step attribute to 0.01. The step attribute will be treated in the following example.

   Browser support for datalist is incomplete. Authors may have to rely on scripts to provide this functionality cross-browser.

     action="../../form-result.php" method="post" target="_blank">   Compound weight:  type="number" name="compoundweight" list="weightslist" step="0.001">   type="submit" value="Send data">    >"weightslist">   value="0.58">   value="16.5">   value="148">   value="26.469">  

   In our last example we’ll be working with the attributes min , max and step to put restrictions to the values the user can input. With this configuration we’re setting a minimum number, a maximum number, and the distance between a selectable number and the following, respectively. More specifically, we’ll only allow the user to pick a number between 1 and 5 that can optionally have one half as its decimal part.

   When the step attribute is present, authors should specify a number to be taken as initial step. This can be done through the attributes min and value . When both are present, the min attribute takes precedence.

   Note that the default value for step is 1. Being this attribute absent, the user won’t be able to change the number of seconds, nor select values with decimals from a datalist .

     action="../../form-result.php" method="post" target="_blank">   Lemmons used for the juice:  type="number" name="lemmonsused" min="1" max="5" step="0.5">   type="submit" value="Send data">   

   Attributes

   Specific attributes

   autofocus

   A boolean value instructing the browser to set the focus to this control when the document has finished loading or when the dialog where the control finds itself is shown. If the attribute has the value «autofocus» or the empty string («»), or if it’s just present, the control should get the focus as soon as possible, after the page or dialog has been loaded.

     Cars owned:  type="number" name="carsowned" autofocus>  

   disabled

   A boolean value indicating wether the control is disabled or not. If the attribute takes the value «disabled» or the empty string («»), or if it’s just present, the control will be disabled.

   Disabled controls are rendered greyed out (if visible), are blocked from user interaction and, more importantly, their values (if any) aren’t sent when the form is submitted.

     action="../../form-result.php" method="post" target="_blank">   Children invited:  type="number" name="childreninvited" disabled>   type="submit" value="Send data">   

   form

   The value of the id attribute of the form with which this control is associated to.

   This attribute is new in HTML 5 and helps defining the pertenence of controls in nested or distant forms.

     Days off:  type="number" name="daysoff" form="form1">   >"form1" action="../../form-result.php" method="post" target="_blank">    type="submit" value="Send data">   

   list

   A token matching the value of the id attribute of the datalist this control is assopciated with. The datalist referenced by this attribute will provide a number of suggestions that users can pick to autocomplete the control.

   Browser support for datalist is incomplete. Authors may have to rely on scripts to provide this functionality cross-browser.

   The values provided by the datalist element must conform with the requirements of number strings.

     action="../../form-result.php" method="post" target="_blank">   Eggs bought:  type="number" name="eggsbought" list="eggslist">   type="submit" value="Send data">    >"eggslist">   value="6">   value="12">   value="24">   value="48">  

   max

   The maximum number the user should be able to pick. Supporting browsers are supposed to disallow the selection of any number greater than the one specified in this attribute.

   The value provided in this attribute must conform with the requirements of number strings.

     action="../../form-result.php" method="post" target="_blank">   Nails:  type="number" name="nails" max="100">   type="submit" value="Send data">   

   min

   The minimum number the user should be able to pick. Supporting browsers are supposed to disallow the selection of any number less than the one specified in this attribute.

   The value provided in this attribute must conform with the requirements of number strings.

     action="../../form-result.php" method="post" target="_blank">   Bolts needed:  type="number" name="boltsneeded" min="10">   type="submit" value="Send data">   

   name

   A name for the control. This name will be sent by the browser to the processing agent, paired with the content of the value attribute. Both attributes together will conform a name-value pair that will be used to process the form data.

   Currently, the value isindex , formerly used in a special way by some browsers and included in the HTML standard, isn’t permitted in this attribute.

     action="../../form-result.php" method="post" target="_blank">   Monthly bottles production:  type="number" name="bottlesproduction">   type="submit" value="Send data">   

   readonly

   A boolean value instructing the browser to prevent the user from changing the control’s value. If this attribute has the value «readonly» or the empty string («»), or if it’s just present, the user won’t be allowed to change the value in the control.

   Although this attribute prevents the control’s value from being edited, not all interaction is blocked: users will still be able to select and copy the text in the control.

     action="../../form-result.php" method="post" target="_blank">   Children:  type="number" name="children" value="2" readonly>   type="submit" value="Send data">   

   required

   A boolean value indicating wether this control can be left empty or not. If this attribute has the value «required» or the empty string («»), or if it’s just present, the user will have to fill the control in order to be able to submit the form .

   If a control with the required attribute present is left blank, supporting browsers will throw an error upon submission and cancel the process immediately.

   Browser support for the attribute required is incomplete. Authors may have to rely on scripts to provide this functionality cross-browser.

     action="../../form-result.php" method="post" target="_blank">   Students:  type="number" name="students" required>   type="submit" value="Send data">   

   step

   A number to be used as the amount of space between an allowed value and the next one. The presence of this attribute reduces the number of choices the user will have by restricting the selection of intermediate values.

   The special value any removes the default restriction over the granularity of the control and allows users to input values as specific as they want.

   To avoid unexpected behaviors, authors should specify a number to be taken as initial step. This can be done through the attributes min and value . When both are present, the min attribute takes precedence.

   The value provided in this attribute must conform with the requirements of number strings.

     action="../../form-result.php" method="post" target="_blank">   Distance (in meters):  type="number" name="distanceinmeters" step="0.01" min="0">   type="submit" value="Send data">   

   type

   A value indicating the type of the field that this element represents. There are twenty two possible values (case-insensitive):

   • hidden: a hidden control used to send information to the server, typically managed by scripts.
   • text: a control used to input a single-line piece of text.
   • search: same as text but for search purposes.
   • tel: a control used to provide a telephone number.
   • url: a text box used to input a single and absolute URL .
   • email: a control designed to edit one or more e-mail addresses.
   • password: a text box for editing passwords, where the characters are represented by dots.
   • date: a control to input a specific date.
   • month: a control to input a specific month.
   • week: a control to input a specific week.
   • time: a control to input a specific time.
   • datetime-local: a control to input a specific local date and time.
   • number: a control to input a number.
   • range: a control to input one or two numbers inside a range.
   • color: a control to input a color.
   • checkbox: a control to input a boolean value (true/false).
   • radio: a control used to choose one single option among many.
   • file: a control used to upload files to the server.
   • submit: a button used to submit the form.
   • image: same as submit but with the ability to be shown as an image instead of using the default button appearance.
   • reset: a button used to reset the form’s controls to their default values.
   • button: a button with no default action associated.

   When this attribute isn’t present, the element behaves as it would have the value «text».

   value

   An initial value for the control, that will be set when the page loads and when the reset button is pressed.

   The value provided in this attribute must conform with the requirements of number strings.

     action="../../form-result.php" method="post" target="_blank">   Available parts:  type="number" name="availableparts" value="25">     type="submit" value="Send data">   type="reset" value="Reset form"> 

   Global attributes

   For information about global attributes refer to this list of global attributes in HTML 5.

   Events

   Global events

   For information about global events refer to this list of global events in HTML 5.

   Tutorials

   Reference

   Источник

   Как получить переменную из type=number

   

   Invalid parameter number: number of bound variables does not match number of tokens
   Не могу решить ошибку: Invalid parameter number: number of bound variables does not match number.

   

   Int number = 2; Console.WriteLine(++number — number— * ++number); Выводит -6; Как ?
   Знающие, объясните, пожалуйста. Каким чудом тут получается -6 ? O_o int number = 2; .

   const n=20; type number=0.9; num= array[1.n] of number; var a,b,c: num; t: boolean;
   Помогите решить пожалуйста) const n=20; type number=0..9; num= array of number; var.

   Сообщение от maakkss

   Сообщение от AmsTaFFix

   Извините, это я не то написал((

   Добавлено через 4 часа 11 минут
   Как мне передать методом GET, 3 значения

   стоп-стоп. kol и summa вы можете передать с помощью input type=hidden. А инпут с типом number, вроде должен передаться. Проверьте с помощью:

   Как правильно объявить переменную с типом данных Number?
   Пытаюсь разобраться с типами данных Oracle — не могу понять, как правильно объявить переменную с.

   Как сохранить введенное число в type=»number» в localStorage?
   Как сохранить введенное число в type="number" в localStorage так, чтобы при обновлении страницы.

   

   Input type=number
   Как сделать чтобы стрелки, которые показываются принаведении на инпут и при фокусе, всегда.

   js аналог html — формы type = number
   есть ли js (jquery) аналог html-формы <input type = ‘number’> в виде, указанном на картинке (т.е.

   Источник

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