Validform validates the instance according to the specified format

Question: It can be empty, but when it is not empty, the data needs to be verified according to the specified format. How to implement it? This article mainly introduces the relevant information that Validform can be empty during verification or it can be verified according to the specified format. Friends who need it can refer to it. I hope it can help everyone.

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After version 5.2.1, datatype supports:

1. Direct binding regularity: If available, write like this datatype="/\w{3,6}/i", requires 3 to 6 characters, not case-sensitive;

2. Supports simple logical operations: such as datatype="m | e, *4-18 | /\w{3,6}/i | /^validform\.rjboy\.cn$/";

can be written as a solution Datatype of the question

datatype = "/^\s*$/|s3-25"

Explanation: /^\s*$/ is empty for verification The regular expression "|" in the value is followed by the format that needs to be verified

or extended datatype

##

$("form.demo").Validform({
 datatype: {
    "empty": /^\s*$/
    }
});

Use:

datatype = "empty|e"

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