allowInvalid.If a non-number is entered in the input, the browser will report the value as an empty string, which means the view / model values in ngModel and subsequently the scope value will also be an empty string.
You can still manually enter a number outside these bounds, but it will be considered invalid.One issue with number inputs is that their step size is 1 by default.
In browsers that follow the HTML5 specification, input [number] does not work as expected with ngModelOptions. W3Schools is optimized for learning, testing, and training.
It defaults to accepting a height in meters, but you can click the relevant button to change the form to accept feet and inches instead.
This can be especially important if the page design doesn't offer descriptive labels for each By default, the up and down buttons provided for you to step the number up and down will step the value up and down by 1. HTML5 constraint validation and allowInvalid.
The step attribute specifies the interval between legal numbers in an element. It's also possible for someone to bypass your HTML and submit the data directly to your server.If your server-side code fails to validate the data it receives, disaster could strike when improperly-formatted data is submitted (or data which is too large, is of the wrong type, and so forth).The rationale for this is that number inputs won't be valid if they contain anything except numbers, and you can constrain the minimum and maximum number of valid digits using the We've already covered the fact that by default, the increment is In the following example is a form for entering the user's height.
Since we want to accept a meter value in centimeters, we've set the We've hidden the feet and inches inputs initially using Now, onto the CSS.
The defines a field for entering a number. If you'd like to contribute to the interactive examples project, please clone The compatibility table on this page is generated from structured data.
Tip: The step attribute can be used together with the max and min attributes to create a range of legal values. But what if we want […]
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step 属性规定输入字段的合法数字间隔（假如 step="3"，则合法数字应该是 -3、0、3、6，以此类推）。 提示： step 属性可以与 max 以及 min 属性配合使用，以创建合法值的范围。 注释： step、max 以及 min 属性适用于以下 类型：number, range, date, datetime, datetime-local, month, time … step - specifies the legal number intervals. You can set bounds with the min and max attributes and users can press up and down to go add or remove 1, or if you add the step attribute, go up or down by a step. )If you didn't do this, you'd have to fill in both feet/inches Get the latest and greatest from MDN delivered straight to your inbox.The newsletter is offered in English only at the moment. This looks very similar to the validation styling we saw before; nothing remarkable here.After declaring a few variables, an event listener is added to the (Note that we're not converting back and forth between meters and feet/inches here, which a real-life web application would probably do. You can set a default value for the input by including a number inside the value attribute, like so:
The source for this interactive example is stored in a GitHub repository. If you haven’t already created an account, you will be prompted to do so after signing in. Tip: Always add the
You can still manually enter a number that's not a multiple of 10, but it will be considered invalid.In this updated version, you should find that the up and down step buttons will not allow you to go below 0 or above 100.
Examples might be simplified to improve reading and basic understanding. This is because the default step is 1… The number input type provides a nice way for to deal with numbers. Sign in to enjoy the benefits of an MDN account.
An HTML form with an input field with a specified legal number intervals:The step attribute specifies the interval between legal numbers in an element.Example: if step="3", legal numbers could be -3, 0, 3, 6, etc.The numbers in the table specify the first browser version that fully supports the attribute.If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: If you try to enter a number with a decimal (such as "1.0"), it will be considered invalid. While using this site, you agree to have read and accepted our 5.
Definition and Usage.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content.
jrandi.
A Number representing the value of the number entered into the input.
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