如何在javascript中创建txt文件

Question

 if (window.XMLHttpRequest) { xmlhttp=new XMLHttpRequest(); } else { xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.open("GET","t1.txt",false); xmlhttp.send(); xmlDoc=xmlhttp.responseText; xmlhttp.open("w","t1.txt"); xmlhttp.writeln('hai'); xmlhttp.close(); console.log(xmlDoc); 

I'll read t1.txt file using XMLHttpRequest() , How I'll write some more text in same file for t1.txt

Answer 1

You can't. Browser-side javascript are not allowed to write to client machine without disabling a lot of security options.

Instead, you could download a new file using this code

function downloadContent(name, content) {
  var atag = document.createElement("a");
  var file = new Blob([content], {type: 'text/plain'});
  atag.href = URL.createObjectURL(file);
  atag.download = name;
  atag.click();
}

downloadContent("t1.txt","hello world");