html
<!DOCTYPE html>
<html>
<body>
<a href="data:text/plain;charset=utf-8,'aaaaaaa'" download="aa.txt" id="aFi-file-download"></a>
<script>
function file_download(str, filename){
var file = new Blob([str],{type: "text/plain;charset=utf-8"});
if(window.navigator.msSaveOrOpenBlob) {
window.navigator.msSaveOrOpenBlob(file, filename);
} else {
document.getElementById("aFi-file-download").href= "data:text/plain;charset=utf-8," + str;
document.getElementById("aFi-file-download").download = filename;
document.getElementById("aFi-file-download").click();
}
}
</script>
</body>
</html>call
file_download("abc", "wiz.txt");
