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| // base64转文件
| export const dataURLtoFile = (image, filename) => {
| var arr = image.split(",");
| var mime = arr[0].match(/:(.*?);/)[1];
| var bstr = atob(arr[1]);
| var n = bstr.length;
| var u8arr = new Uint8Array(n);
| while (n--) {
| u8arr[n] = bstr.charCodeAt(n);
| }
| let file = new File([u8arr], filename, { type: mime })
| return file;
| }
|
| // 第一个参数为你想生成的固定的文字开头比如: 微信用户xxxxx
| // 第二个为你想生成出固定开头文字外的随机长度
| export const random = ( randomLength) =>{
| // 兼容更低版本的默认值写法
| // prefix === undefined ? prefix = "" : prefix;
| randomLength === undefined ? randomLength = 3 : randomLength;
|
| // 设置随机用户名
| // 用户名随机词典数组
| let nameArr = [
| ["中","笑","贝","凯","歌","易","仁","器","义","礼","智","信","友","上","都","好","无","九","钰","玉","忠","孝","卿","聪","澜","纯","毓","悦","昭","冰","爽","琬","茗","羽","希","宁"],
| ["秀","娟","英","华","慧","巧","美","娜","静","淑","惠","珠","翠","雅","芝","玉","萍","红","娥","玲","芬","芳","燕","彩","春","菊","轮","翰","朗","伯","言","若","鸣","朋","斌","梁","栋","维"]
| ]
| // 随机名字字符串
| // let name = prefix;
| let name = "";
|
| // 循环遍历从用户词典中随机抽出一个
| for (var i = 0; i < randomLength; i++) {
| // 随机生成index
| let index = Math.floor(Math.random() * 2);
| let zm = nameArr[index][Math.floor(Math.random() * nameArr[index].length)];
| // 如果随机出的是英文字母
| if (index === 1) {
| // 则百分之50的概率变为大写
| if (Math.floor(Math.random() * 2) === 1) {
| zm = zm.toUpperCase();
| }
| }
| // 拼接进名字变量中
| name += zm;
| }
| // 将随机生成的名字返回
| return name;
| }
|
|
