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。
标签：
微信小程序,工具函数
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