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本文实例为大家分享了微信小程序工具函数封装的具体代码,供大家参考,具体内容如下
const formatTime = date => { const year = date.getFullYear() const month = date.getMonth() + 1 const day = date.getDate() const hour = date.getHours() const minute = date.getMinutes() const second = date.getSeconds() return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':') } const formatNumber = n => { n = n.toString() return n[1] "8888": wx.navigateTo({ url: '../hotbook/hotbook"9999": { wx.navigateTo({ url: '../book-detail/book-detail"", WordToHexValue_temp = "", lByte, lCount; for (lCount = 0; lCount <= 3; lCount++) { lByte = (lValue > (lCount * 8)) & 255; WordToHexValue_temp = "0" + lByte.toString(16); WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - 2, 2); } return WordToHexValue; } function Utf8Encode(string) { var utftext = ""; for (var n = 0; n < string.length; n++) { var c = string.charCodeAt(n); if (c < 128) { utftext += String.fromCharCode(c); } else if ((c > 127) && (c < 2048)) { utftext += String.fromCharCode((c 6) | 192); utftext += String.fromCharCode((c & 63) | 128); } else { utftext += String.fromCharCode((c 12) | 224); utftext += String.fromCharCode(((c 6) & 63) | 128); utftext += String.fromCharCode((c & 63) | 128); } } return utftext; } function requestLoading(url, params, message) { let promise = new Promise((resolve, reject) => { wx.showNavigationBarLoading() if (message != "") { wx.showLoading({ title: message }) } var timestamp = Date.parse(new Date()); timestamp = timestamp / 1000; params['openid'] = wx.getStorageSync('openid'); var newParams = this.objKeySort(params); newParams['unionid'] = wx.getStorageSync('unionid'); newParams['antime'] = timestamp; newParams['key'] = this.jiamiParams(newParams); wx.request({ url: url, data: newParams, header: { 'content-type': 'application/x-www-form-urlencoded' }, method: 'post', success: function (res) { wx.hideNavigationBarLoading() if (message != "") { wx.hideLoading() } if (res.statusCode == 200) { resolve(res.data) } else { reject(res) } }, fail: function (res) { wx.hideNavigationBarLoading() if (message != "") { wx.hideLoading() } reject('网络出错!') } }) }) return promise } module.exports = { http: http, formatTime: formatTime, requestLoading: requestLoading, tiaozhuan: tiaozhuan, tiaozhuanAd: tiaozhuanAd, objKeySort: objKeySort, jiamiParams: jiamiParams }
这个工具函数中用promise封装了微信小程序数据请求的方法:单独拿出来(但不能单独使用哦,因为还需要借助上面的一些工具函数)
function requestLoading(url, params, message) { let promise = new Promise((resolve, reject) => { wx.showNavigationBarLoading() if (message != "") { wx.showLoading({ title: message }) } var timestamp = Date.parse(new Date()); timestamp = timestamp / 1000; params['openid'] = wx.getStorageSync('openid'); var newParams = this.objKeySort(params); newParams['unionid'] = wx.getStorageSync('unionid'); newParams['antime'] = timestamp; newParams['key'] = this.jiamiParams(newParams); wx.request({ url: url, data: newParams, header: { 'content-type': 'application/x-www-form-urlencoded' }, method: 'post', success: function (res) { wx.hideNavigationBarLoading() if (message != "") { wx.hideLoading() } if (res.statusCode == 200) { resolve(res.data) } else { reject(res) } }, fail: function (res) { wx.hideNavigationBarLoading() if (message != "") { wx.hideLoading() } reject('网络出错!') } }) }) return promise }
使用方法:
util1.requestLoading(url, param, "正在加载数据").then(res => { if (res.status == 1) { let bannerList = res.data that.setData({ bannerList }); } }).catch(()=>{ wx.showToast({ title: '加载数据失败', }) })
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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