JAVASCRIPT

new blob javascript

//The Blob() constructor returns a new Blob object. The content of the blob
//consists of the concatenation of the values given in the parameter array.

const obj = {hello: 'world'};
const blob = new Blob([JSON.stringify(obj, null, 2)], {type : 'application/json'});

how to create a blob javascript

new Blob([`${/*this part declares the value*/'<h1>Hello</h1><style>h1:after{content:"world!"}</style>'}`], {
    type: 'text/html'
})

what is a blob in javascript

//The Blob() constructor returns a new Blob object. The content of the blob
//consists of the concatenation of the values given in the parameter array.

//syntax
var newBlob = new Blob(array, options);