How to Use Angular 2 to Eliminate Unnecessary Commas in a Text/CSV

Seeking assistance with removing extraneous commas from a file, using the code snippet below:

const data: any = utils.sheet_to_csv(ws);
let blob = new Blob(['\ufeff' + data], { type: 'text;charset=utf-8;' });
let dwldLink = document.createElement("a");
let url = URL.createObjectURL(blob);

Presently, the output on the first line appears as follows:

,,,,,       ,NTD00539,100000,01,Varsha,20180607   

Is there a way to eliminate the initial five commas?

Answer №1

To optimize the code, consider removing unnecessary ',' like this:

    while (data.match(/^,/) !== null) {    
      data = data.replace(/^,/, ""); //remove comma from beginning   
    }

    while (data.match(/,\s*$/) !== null) {    
       data = data.replace(/,\s*$/, ""); //remove comma from end
    }

    while (data.match(/,,/g) !== undefined) {    
      data = data.replace(/,,/g, ','); console.log('count')//replace consecutive commas 
    }

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