Question

我试图在以下函数中跳过CSV中项目的第一行或标题：

importFoods() {
  var csv= `foodname,category
    Banana,Produce
    Apple,Produce`;

  var lines = csv.split("\n");
  console.log('lines',lines);
  for(var l in lines) {
    var cols = lines[l].split(",")
    console.log('cols',cols);
    //0 is foodname
    //1 is category
    var globallistData = {
      foodname: cols[0],
      category: cols[1],
    };

    console.log(globallistData)
    const globalfoods = this.db.list('/globalfoods');
    globalfoods.push(globallistData);
  }
}

使用Angular或Typescript / Javascript进行此操作的最佳方法是什么？

Answer 1

importFoods(){
   var csv= `foodname,category
       Banana,Produce
       Apple,Produce`;

   var lines = csv.split("\n");
   console.log('lines',lines);
   for(var l=1; l<lines.length ;l++){
          var cols = lines[l].split(",")
          console.log('cols',cols);
         //0 is foodname
         //1 is category
         ....
    }
 }

Answer 2

你真是太近了！以下是通过forEach迭代方法和join个新数组项的简单解决方案：

function importFoods() {
  var csv= `foodname,category
    Banana,Produce
    Apple,Produce`;
    
  var newCsv = [];

  var lines = csv.split("\n");
  lines.forEach(function(item, i) {
    if(i !== 0) newCsv.push(item);
  })
  
  newCsv = newCsv.join("\n");
  console.log(newCsv);
}

importFoods()

如何跳过CSV中的第一行项目？

2 个答案: