VeeValidate 表单校验
vee-validate is a template-based validation framework for Vue.js that allows you to validate inputs and display errors.
Being template-based you only need to specify for each input what kind of validators should be used when the value changes. The errors will be automatically generated with 40+ locales supported. Many rules are available out of the box.
This plugin is inspired by PHP Framework Laravel's validation.
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Installation#
yarn#
npm#
CDNvee-validate is also available on these CDNs:
When using a CDN via script tag, all the exported modules on VeeValidate are available on the VeeValidate Object. ex: VeeValidate.Validator
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Getting StartedIn your script entry point:
Now you are all setup to use the plugin.
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UsageThere are two ways to use vee-validate:
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Using Components (recommended)This is available in 2.1 onwards.
Import the ValidationProvider
component and register it:
All the JavaScript work is done. Next in the template add the inputs you want to validate them:
With Vue 2.6.0+
Before Vue 2.6.0
The validation provider accepts two props: rules
which is in its simplest form, a string containing the validation rules separated by a |
character, and a name
prop which is the field name that will be used in error messages.
and That's it, your input will be validated automatically, notice that the ValidationProvider
uses scoped slots to pass down validation state and results.
There is more that can be done! You can customize events, validate initial values, manually validate or reset the field and much more. Make sure to read the docs.
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Using directiveApply the v-validate
directive on your input and pass a string value which is a list of validations separated by a pipe. For example, we will use the required
and the email
validators:
Now every time the input changes, the validator will run the list of validations from left to right, populating the errors helper object whenever an input fails validation.
To access the errors object (in your vue instance):
Let's display the error for the email input we've created:
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DocumentationRead the documentation and demos.
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CompatibilityThis library uses ES6 Promises so be sure to provide a polyfill for it for the browsers that do not support it.
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Tutorials and Examples#
Articles- Validation Providers
- Authoring Validatble Vue Components
- Vue Multi Step Form by Dave Stewart
- An imperative guide to forms in Vue.js by Olayinka Omole.
- Template Driven Form Validation In Vue.js by Ogundipe Samuel Ayo
- Make Validation Great Again! Vue form validation with vee validate by Nick Hall
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Credits- Some validations/test scenarios are provided/based on validator.js.
- Inspired by Laravel's validation syntax.
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licenseMIT