This document is intended to help developers find the verification content and rules and quickly locate the reasons for the verification failure.
Incorrect mip html tag and attribute
1. Mandatory tags missing
| Prompt |
MANDATORY_TAG_MISSING |
|---|---|
| Error Description | "The mandatory tag '% 1' is missing or incorrect ." |
| Error Description | Mandatory Tag 'XXX' missing or incorrect |
| Solution | Add (or correct) mandatory html tags |
In mip html, mandatory tags include:
| Description |
Remarks |
|---|---|
| <! Doctype html> | Case Sensitive |
| <Html mip> | Force lowercase |
| <Head> | Force lowercase |
| <Meta charset = "utf-8"> | UTF-8 is case-insensitive and has no single quotation marks or double quotation marks. |
| <Meta name = "viewport" content = "width = device-width, initial-scale = 1"> | It must be in lower case and has no single or double quotation marks. |
| <Link rel = "stylesheet" type = "text/css" href = "https://mipcache.bdstatic.com/static/v1/mip.css"> | It must be in lower case and has no single or double quotation marks. v1.1.1 varies with versions. |
| <Script src = "https://mipcache.bdstatic.com/static/v1/mip.js"> </script> | It must be in lower case and has no single or double quotation marks. v1.1.2 varies with versions. |
| <Body> | Force lowercase |
| <Link rel = "canonical" href = "http (s): // xxx"> | Force lowercase |
PS: When the meta tag name = "viewport", the value of content must at least contain width = device-width, attributes minimum-scale = 1 and initial-scale = 1 are not fixed.
2. Disable tags
| Prompt |
DISALLOWED_TAG |
|---|---|
| Error Description | "The tag '% 1' is disallowed ." |
| Error Description | Disable the 'XX' label |
| Solution | Delete a disabled tag |
Most HTML tags are allowed. For more information about the tags that are disabled or need to be replaced, see the mip html specification.
3. Invalid attribute value
| Prompt |
INVALID_ATTR_VALUE |
|---|---|
| Error Description | "The attribute '% 1' in tag' % 2' is set to the invalid value' % 3 '." |
| Error Description | The property value 'XX' of attribute 'XX' in tag 'XX' is invalid. |
| Solution | Change to valid attribute value |
This error is reported when the html tag has incorrect attribute values. Note the following in mip:
A: The href attribute does not allow javascript: Protocol,
A: set the target attribute to _ blank.
Mip-img
Src: Must be a url
Mip-pix
Src: it must be an https-supported url,
If you use the https proxy provided by baidu Cloud, the url contains "t = {TIME} & title = {TITLE} & host = {HOST} & from = baidu"
Other basic html page attributes remain unchanged
Note:
1. The url in mip html must be https-secured.
2. <a> label:
<A href = "javascript: xxx ()"> </a> error
-<A href = "xxx" target = "_ blank"> </a>
4. Invalid value of the property value
| Prompt |
INVALID_PROPERTY_VALUE_IN_ATTR_VALUE |
|---|---|
| Error Description | "The property '% 1' in attribute' % 2' in tag '% 3' is set to' % 4', which is invalid ." |
| Error Description | The tag 'XX' contains the property 'yy', 'yy' has the property 'zic', and the property value 'a' of the property 'zic' is invalid. |
| Solution | Invalid attribute value correction |
Invalid values of attribute values may occur:
<Meta name = "viewport" content = "width = device-width, minimum-scale = 1, initial-scale = 1">
Property value of width: device-width
Initial-scale attribute value 1
<Script type = "application/ld + json"> </script>
<Script type = "application/json"> </script>
In addition to the js required for the external link MIP, the type attribute value of the script tag should be application/ld + json or application/json.
Note: All values except the preceding values are invalid.
5. The mandatory attribute is missing.
| Prompt |
MANDATORY_ONEOF_ATTR_MISSING |
|---|---|
| Error Description | "The tag '% 1' is missing a mandatory attribute-pick one of % 2 ." |
| Error Description | The mandatory attribute 'XX' of the tag 'XX' is missing. |
| Solution | Adding correct attribute |
For example, in mip html, mip-img and mip-pix have mandatory attributes of src:
Mip-img
Src
Mip-pix
Src
6. Direct parent label error
| Prompt |
WRONG_PARENT_TAG |
|---|---|
| Error Description | "The parent tag of tag '% 1' is' % 2', but it can only be '% 3 '." |
| Error Description | The direct parent label of tag 'A' should be 'B', not 'C' |
| Solution | Add the required parent tag |
Some labels have defined direct parent labels. The following example shows the direct parent labels required for each label:
! The direct parent label of doctype is root.
The direct parent label of head is html
The direct parent label of the body is html.
The direct parent label of link is head.
The direct parent label of meta is head.
Style mip-custom's direct parent label is head
The direct parent label of style is boilerplate.
7. Invalid parent label
| Prompt |
DISALLOWED_TAG_ANCESTOR |
|---|---|
| Error Description | "The tag '% 1' may not appear as a descendant of tag' % 2 '." |
| Error Description | Tag 'A' should not be a subtag of tag 'B' |
| Solution | Delete illegal nested tags |
For example:
The sub-tag of <body> is written in
8. Force parent labels
| Prompt |
MANDATORY_TAG_ANCESTOR |
|---|---|
| Error Description | "The tag '% 1' may only appear as a descendant of tag' % 2 '." |
| Error Description | Tag 'A' can only be a child tag of tag 'B' |
| Solution | Delete tags or add correct parent labels to tags |
Img must be a subtag of noscript
Video must be a subtag of noscript.
Audio must be a subtag of noscript.
When noscript is used in the head, it must be the last subnode of the head. There is no limit on noscript in the body.
9. Duplicate unique tags
| Prompt |
DUPLICATE_UNIQUE_TAG |
|---|---|
| Error Description | "The tag '% 1' appears more than once in the document ." |
| Error Description | The tag 'XX' can only appear once |
| Solution | Delete unnecessary tags |
Some tags in html are unique, that is, they can only appear once. When there are duplicate unique tags in html, an error should be reported.
The following is a list of unique tags:
<Doctype html>
<Html mip>
<Head>
<Link rel = "canonical" href =...>
<Meta charset = "utf-8">
<Meta viewport>
<Style mip-custom>
<Body>
MIP verification tool address: https://www.mipengine.org/validator/validate
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