最近项目需要用到对输入字段进行校验,翻看了EXTJS TextField的联机文档,里面有如下说明:
Validates a value according to the field's validation rules and marks the field as invalid
* if the validation fails. Validation rules are processed in the following order:
*
- 1. Field specific validator
*
*A validator offers a way to customize and reuse a validation specification.
* If a field is configured with a{@link #validator}
* function, it will be passed the current field value. The{@link #validator}
* function is expected to return either:
*- Boolean true if the value is valid (validation continues).
* - a String to represent the invalid message if invalid (validation halts).
*
*
*
*
* - Boolean true if the value is valid (validation continues).
- 2. Basic Validation
*
*If the
{@link #validator}
has not halted validation,
* basic validation proceeds as follows:
*
*{@link #allowBlank}
: (Invalid message =
*{@link #emptyText}
)
* Depending on the configuration of{@link #allowBlank}
, a
* blank field will cause validation to halt at this step and return
* Boolean true or false accordingly.
*
*
*{@link #minLength}
: (Invalid message =
*{@link #minLengthText}
)
* If the passed value does not satisfy the{@link #minLength}
* specified, validation halts.
*
*
*{@link #maxLength}
: (Invalid message =
*{@link #maxLengthText}
)
* If the passed value does not satisfy the{@link #maxLength}
* specified, validation halts.
*
*
*
*
*
*
*
* - 3. Preconfigured Validation Types (VTypes)
*
*If none of the prior validation steps halts validation, a field
* configured with a{@link #vtype}
will utilize the
* corresponding {@link Ext.form.VTypes VTypes} validation function.
* If invalid, either the field's{@link #vtypeText}
or
* the VTypes vtype Text property will be used for the invalid message.
* Keystrokes on the field will be filtered according to the VTypes
* vtype Mask property.
*
*
* - 4. Field specific regex test
*
*If none of the prior validation steps halts validation, a field's
* configured{@link #regex}
test will be processed.
* The invalid message for this test is configured with
*{@link #regexText}
.
*
*
* @param {Mixed} value The value to validate
* @return {Boolean} True if the value is valid, else false
*/
*
*