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微信小程序常用集合
2022-07-06 12:07:00 【痴心阿文】
目录
微信小程序获取上传图片大小
wx.chooseImage({
count: 1,
sizeType: ['compressed'],
sourceType: ['album', 'camera'],
success: function (res) {
var tempFilesSize = res.tempFiles[0].size; //获取图片的大小,单位B
const tempFilePaths = res.tempFilePaths;
console.log('size:', tempFilesSize)
if (tempFilesSize <= 2000000) { //图片小于或者等于2M时 可以执行获取图片
// code
} else { //图片大于2M,弹出一个提示框
wx.showToast({
title: '上传图片不能大于2M!', //标题
icon: 'none' //图标 none不使用图标,详情看官方文档
})
}
},
fail: function (res) {
wx.hideLoading()
}
});
微信小程序base64位大小计算
/****base64位大小计算**/
getImgSize(str) {
//获取base64图片大小,返回KB数字
var str = base64url.replace('data:image/jpeg;base64,', '');//这里根据自己上传图片的格式进行相应修改
var strLength = str.length;
var fileLength = parseInt(strLength - (strLength / 8) * 2);
// 由字节转换为KB
var size = "";
size = (fileLength / 1024).toFixed(2);
return parseInt(size);
},
微信小程序小程序分包
"subPackages": [
{
"root": "A/",
"pages": [
"index/index",
"form/form"
]
},
{
"root": "B/",
"pages": [
"index/index",
"form/form"
]
}
]
结束语
未完待续...
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