@joey asked how to wrap @philipp's answer in a function, so here's a solution that does that in modern Javascript (thanks @Endless): ... <看更多>

Blob to String conversion example in JavaScript using the FileReader API. This displays "Lorem ipsum sit" in the console. - blob2str.js. ... <看更多>

Raw, unsigned bytes to represent as a blob. Default value annotations: string[] = []. An optional array of strings to ... ... <看更多>

If you want to display an Attachment in Visualforce, you don't want to convert it to a string and then send to the frontend. Rather, you want to have the ... ... <看更多>