uniapp miscellaneous notes

1. Use of uni.showModal

uni.showModal({
    title:'',
    content:'',
    success(res){
        if(res.confirm){
            console.log('点击确定按钮')
        } else if(res.cancel){
            console.log('点击取消按钮')
    }
}
})

scenes to be used:

The pop-up box can choose to confirm or cancel

Select OK to execute the required code in res.confirm,

Select Cancel to cancel the current operation.

2. The usefulness of #ifdef #ifndef #endif in uniapp (conditional compilation)

Role: processing compatible multi-terminal platform

#ifdef	Only available on a certain platform
#ifndef	Use on other platforms besides this platform (not used by this platform)
#endif	end conditional compilation
%PLATFORM%	The platform that needs to be compiled, the above MP is the meaning of each small program

The meaning of the platform logo

logo	platform
APP-PLUS	5+App
MP	WeChat Mini Program/Alipay Mini Program/Baidu Mini Program/Toutiao Mini Program/QQ Mini Program
MP-WEIXIN	WeChat applet
MP-ALIPAY	Alipay applet
MP-BAIDU	Baidu applet
MP-TOUTIAO	Toutiao Mini Program
MP-QQ	QQ applet
H5	H5
APP-PLUS-NVUE	5+App nvue

Example: A certain piece of code compiled only on the WeChat applet

// #ifdef MP-WEIXIN
代码内容
// #endif

Conditional compilation is implemented using comments. Comments are written differently in different grammars. JavaScript uses //comments, CSS uses /**/

Appears only under App

// #ifdef APP-PLUS
代码内容
// #endif

Will not appear on the H5 platform

// #ifndef H5
代码内容
// #endif

In addition to supporting conditional compilation of a single platform, it also supports simultaneous compilation of multiple platforms, using || (or) to separate the platform name,

Will appear on App and H5 platform

// #ifdef APP-PLUS || H5
代码内容
// #endif