weex-ui
Version:
A rich interaction, lightweight, high performance UI library based on Weex
216 lines (201 loc) • 5.26 kB
JavaScript
/**
* 工具方法库
* @namespace Utils
* @example
*
* const { Utils } = require('@ali/wxv-bridge');
*/
const Utils = {
/**
* 环境判断辅助 API
* @namespace Utils.env
* @example
*
* const { Utils } = require('@ali/wxv-bridge');
* const { env } = Utils;
*/
isString (obj) {
return typeof(obj) === 'string';
},
isNonEmptyArray (obj = []) {
return obj && obj.length > 0 && Array.isArray(obj) && typeof obj !== 'undefined';
},
env: {
/**
* 是否是手淘容器
* @method
* @memberOf Utils.env
* @returns {boolean}
* @example
*
* const isTaobao = env.isTaobao();
*/
isTaobao () {
let { appName } = weex.config.env;
return /(tb|taobao|淘宝)/i.test(appName);
},
/**
* 是否是旅客容器
* @memberOf Utils.env
* @method
* @returns {boolean}
* @example
*
* const isTrip = env.isTrip();
*/
isTrip () {
let { appName } = weex.config.env;
return appName === 'LX';
},
/**
* 是否是 web 环境
* @memberOf Utils.env
* @method
* @returns {boolean}
* @example
*
* const isWeb = env.isWeb();
*/
isWeb () {
let { platform } = weex.config.env;
return typeof(window) === 'object' && platform.toLowerCase() === 'web';
},
/**
* 是否是 iOS 系统
* @memberOf Utils.env
* @method
* @returns {boolean}
* @example
*
* const isIOS = env.isIOS();
*/
isIOS () {
let { platform } = weex.config.env;
return platform.toLowerCase() === 'ios';
},
/**
* 是否是 Android 系统
* @memberOf Utils.env
* @method
* @returns {boolean}
* @example
*
* const isAndroid = env.isAndroid();
*/
isAndroid () {
let { platform } = weex.config.env;
return platform.toLowerCase() === 'android';
},
/**
* 是否是支付宝容器
* @memberOf Utils.env
* @method
* @returns {boolean}
* @example
*
* const isAlipay = env.isAlipay();
*/
isAlipay () {
let { appName } = weex.config.env;
return appName === 'AP';
},
/**
* 是否是支付宝H5容器(防止以后支付宝接入weex)
* @memberOf Utils.env
* @method
* @returns {boolean}
* @example
*
* const isAlipayWeb = env.isAlipayWeb();
*/
isAlipayWeb () {
return Utils.env.isAlipay() && Utils.env.isWeb();
},
/**
* 判断是否支持expressionBinding
* 当weex版本大于0.10.1.6，为客户端即可以支持expressionBinding
* @returns {Boolean}
*/
supportsEB () {
const weexVersion = weex.config.env.weexVersion || '0';
const isHighWeex = Utils.compareVersion(weexVersion, '0.10.1.4') && (Utils.env.isIOS() || Utils.env.isAndroid());
const expressionBinding = weex.requireModule('expressionBinding');
return expressionBinding && expressionBinding.enableBinding && isHighWeex;
},
/**
* 判断Android容器是否支持是否支持expressionBinding(处理方式很不一致)
* @returns {boolean}
*/
supportsEBForAndroid () {
return (Utils.env.isAndroid()) && Utils.env.supportsEB();
},
/**
* 判断IOS容器是否支持是否支持expressionBinding
* @returns {boolean}
*/
supportsEBForIos () {
return (Utils.env.isIOS()) && Utils.env.supportsEB();
},
/**
* 获取weex屏幕真实的设置高度，需要减去导航栏高度
* @returns {Number}
*/
getPageHeight () {
const { env } = weex.config;
const navHeight = Utils.env.isWeb() ? 0 : 130;
return env.deviceHeight / env.deviceWidth * 750 - navHeight;
}
},
/**
* 版本号比较
* @memberOf Utils
* @param currVer {string}
* @param promoteVer {string}
* @returns {boolean}
* @example
*
* const { Utils } = require('@ali/wx-bridge');
* const { compareVersion } = Utils;
* console.log(compareVersion('0.1.100', '0.1.11')); // 'true'
*/
compareVersion (currVer = "0.0.0", promoteVer = "0.0.0") {
if (currVer === promoteVer) return true;
const currVerArr = currVer.split(".");
const promoteVerArr = promoteVer.split(".");
const len = Math.max(currVerArr.length, promoteVerArr.length);
for (let i = 0; i < len; i++) {
let proVal = ~~promoteVerArr[i];
let curVal = ~~currVerArr[i];
if (proVal < curVal) {
return true;
} else if (proVal > curVal) {
return false;
}
}
return false;
},
truncateString (str, len, hasDot = true) {
let newLength = 0;
let newStr = "";
let singleChar = '';
const chineseRegex = /[^\x00-\xff]/g;
const strLength = str.replace(chineseRegex, '**').length;
for (let i = 0; i < strLength; i++) {
singleChar = str.charAt(i).toString();
if (singleChar.match(chineseRegex) !== null) {
newLength += 2;
} else {
newLength++;
}
if (newLength > len) {
break;
}
newStr += singleChar;
}
if (hasDot && strLength > len) {
newStr += '...';
}
return newStr;
},
};
module.exports = Utils;