core.js:4352 ERROR TypeError: Failed to execute 'readAsArrayBuffer' on 'FileReader': parameter 1 is not of type 'Blob'.
onSelectFile(event) {
let reader = new FileReader();
reader.onload = function(){
let output: any = document.getElementById('blah');
output.src = reader.result;
}
if(event.target.files[0]){
reader.readAsDataURL(event.target.files[0]);
}
}Failed to execute 'readAsDataURL' on 'FileReader': parameter 1 is not of type 'Blob'.
//This this happen when you pass the array to readAsDataURL function
// like this
let file = e.target.files; //incorrect
let file = e.target.files[0]; //correct
getBase64(file);
function getBase64(file) {
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = () => resolve(reader.result);
reader.onerror = error => reject(error);
});
}
//readAsDataURL read only single object on the whole arrayCopyright © 2021 Codeinu
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