


How does the WeChat applet TDesign UI library CSS selector: .t-grid--card take effect?
Apr 05, 2025 pm 09:24 PMDetailed explanation of the WeChat applet TDesign UI library CSS selector
When using the WeChat applet TDesign UI library, developers may be confused about the mechanism of action of certain CSS selectors. For example, the class attribute of a page element is t-grid t-card t-class
, while the corresponding CSS selector is .t-grid--card
. What's going on?
The key to the effectiveness of this selector lies in the external style mechanism of WeChat applets. Instead of applying styles directly, t-class
attribute acts as a bridge to dynamically receive style classes from the TDesign UI library. The library uses data binding or other technical means to assign the style class containing .t-grid--card
to t-class
. Therefore, this selector can take effect even if .t-grid--card
is not displayed directly in the DOM structure.
The naming method of .t-grid--card
follows the BEM (block), element, modifier) ??naming convention, aiming to improve the maintainability and readability of CSS. Although it looks like BEM, the TDesign UI library may have simplified it --
here as a modifier, indicating card
is a modified state of t-grid
. This simplification helps shorten the class name and improves code efficiency.
Finally, it should be emphasized that CSS variables are declared with --
and are used by the var()
function. .t-grid--card
is not a CSS variable, but a CSS class name that follows the BEM convention.
The above is the detailed content of How does the WeChat applet TDesign UI library CSS selector: .t-grid--card take effect?. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor.

AnimatingSVGwithCSSispossibleusingkeyframesforbasicanimationsandtransitionsforinteractiveeffects.1.Use@keyframestodefineanimationstagesforpropertieslikescale,opacity,andcolor.2.ApplytheanimationtoSVGelementssuchas,,orviaCSSclasses.3.Forhoverorstate-b

Theconic-gradient()functioninCSScreatescirculargradientsthatrotatecolorstopsaroundacentralpoint.1.Itisidealforpiecharts,progressindicators,colorwheels,anddecorativebackgrounds.2.Itworksbydefiningcolorstopsatspecificangles,optionallystartingfromadefin

Mobile-firstCSSdesignrequiressettingtheviewportmetatag,usingrelativeunits,stylingfromsmallscreensup,optimizingtypographyandtouchtargets.First,addtocontrolscaling.Second,use%,em,orreminsteadofpixelsforflexiblelayouts.Third,writebasestylesformobile,the

?As a stable digital asset pegged to the US dollar, USDT's value conversion and monetization are issues that many users are concerned about. This article will introduce the value composition of USDT in detail and provide practical tutorials on value conversion and monetization in mainland China. 1 USDT's cash value is approximately equal to the real-time dollar exchange rate, but the final delivery price through C2C trading will fluctuate slightly. The core of conversion is to select a merchant with good reputation and appropriate price to trade through the C2C function of a reliable platform.

Yes, but there are restrictions. ① You can log in to the same account on both iPhone and Android phones, but logging in to the latest device will cause the earliest session to be offline; ② You can log in at the same time on the mobile phone and the computer desktop, but the functions are not synchronized; ③ Although using third-party tools or dual-app functions can enable logging in between two mobile phones, it is unofficially supported and may violate regulations; ④ Alternative solutions include using web version/desktop version to match the main phone, or transferring chat records through cloud backup and file tools. Some Android machines can also use "dual applications" to run two account instances.

There are three ways to create a CSS loading rotator: 1. Use the basic rotator of borders to achieve simple animation through HTML and CSS; 2. Use a custom rotator of multiple points to achieve the jump effect through different delay times; 3. Add a rotator in the button and switch classes through JavaScript to display the loading status. Each approach emphasizes the importance of design details such as color, size, accessibility and performance optimization to enhance the user experience.

FeaturedetectioninCSSusing@supportschecksifabrowsersupportsaspecificfeaturebeforeapplyingrelatedstyles.1.ItusesconditionalCSSblocksbasedonproperty-valuepairs,suchas@supports(display:grid).2.Thismethodensuresfuturecompatibilityandavoidsrelianceonunrel
