这里写自定义目录标题
判断IOS系统判断iPhoneX及以后版本判断微信环境判断网络
判断IOS系统
function getIsIOS(){
const UA = navigator
.userAgent
.toLowerCase();
const isAndroid
= /android|adr/gi.test(UA);
const isIos
= /iphone|ipod|ipad/gi.test(UA) && !isAndroid
;
return isIos
}
判断iPhoneX及以后版本
function isIphoneX() {
const xSeriesConfig
= [
{
devicePixelRatio
: 3,
width
: 375,
height
: 812,
},
{
devicePixelRatio
: 3,
width
: 414,
height
: 896,
},
{
devicePixelRatio
: 2,
width
: 414,
height
: 896,
},
]
if (typeof window
!== 'undefined' && window
) {
const isIOS
= /iphone/gi.test(window
.navigator
.userAgent
)
if (!isIOS
) {
return false
}
const { devicePixelRatio
, screen
} = window
const { width
, height
} = screen
return xSeriesConfig
.some(item
=> item
.devicePixelRatio
=== devicePixelRatio
&& item
.width
=== width
&& item
.height
=== height
)
}
return false
}
判断微信环境
export function getIsWeixin() {
const ua
= navigator
.userAgent
.toLowerCase();
if (ua
.match(/MicroMessenger/i) == "micromessenger") {
return true;
}
return false;
}
判断网络
function isOnLine() {
function onLine(callback
) {
var img
= new Image();
img
.src
= 'https://www.baidu.com/favicon.ico?_t=' + Date
.now();
img
.onload = function () {
if (callback
) callback(true)
};
img
.onerror = function () {
if (callback
) callback(false)
};
}
onLine(function (flag
) {
if (flag
) {
} else {
window
.LeKeBridge
.sendMessage2Native("toast", "网络断开");
}
})
}
