https://blog.archai.space/tags/node.js/ Recent content in Node.js on Archai's home Hugo -- gohugo.io Sun, 05 Jul 2020 00:00:00 +0000 https://blog.archai.space/p/javascript%E7%94%9F%E6%88%90%E5%9B%BE%E7%89%87%E6%96%87%E4%BB%B6%E8%B7%AF%E5%BE%84json/ Sun, 05 Jul 2020 00:00:00 +0000 https://blog.archai.space/p/javascript%E7%94%9F%E6%88%90%E5%9B%BE%E7%89%87%E6%96%87%E4%BB%B6%E8%B7%AF%E5%BE%84json/ 在写小demo的过程中，经常需要把某个文件夹的图片文件的路径给引入，除非全部重命名成有序的数字，不然不好处理，这就用到了node中的fs和path模块，还没学… const path=require("path"); const fs = require('fs'); fs.stat('../images',(err)=>{//图片文件所在目录 if (err)return; var result='{' fs.readdir("../images",(err,data)=>{//图片文件所在目录 for(var i=0;i<Object.keys(data).length;i++){ let ImgPath="\"images/"+data[i]+"\""; result+="\""+i+"\":"+ImgPath+","; } result=result.substring(0,result.length-1); let length="\""+"length"+"\""+":"+"\""+Object.keys(data).length+"\""//文件数量 result+=","+length+'}' fs.writeFile("../data/imgPath.json",result,(err)=>{ if(err)return; console.log("写入文件成功，一共"+Object.keys(data).length+"个文件"); }); }); }); 生成的文件大概就是这样的一个json数据 {"0":"images/1.jpg","1":"images/10.jpg","2":"images/100.jpg","3":"images/101.jpg","4":"images/102.jpg","5":"images/103.jpg","6":"images/104.jpg","7":"images/105.jpg","8":"images/106.jpg","9":"images/107.jpg","10":"images/108.jpg","length":"109"}