SharePoint file upload using API

[Pulak2409]

Is there any API available to upload file in SharePoint? Sample code will be helpful.

If we upload same file using API will it replace the old file or create a new version of the file? Please advise.

[#2]

Hey @Pulak2409 ,

I recommend you use PnPJs, since it makes handling REST calls a lot easier for you. This page shows how to work with files using it. A good point is that, after uploading the file, you may want to update it to set the Title of the Item you just created. Here is a piece of my code, which uploads from an input button. Any problem, let me know!

$("input").change(e => {

e.preventDefault();

let input: HTMLInputElement = <HTMLInputElement>jQuery(e.target)[0];

let file = input.files[0];

if (!file || file.size == 0)

alert("Arquivo Inválido");

else{

sp.web.lists.getByTitle("Documents").rootFolder.files.add(file.name, file, true).then(f => {

f.file.getItem().then(item => {

let file = new Object();

file.Title = "MyTitle";

item.update(file).then(() => {

return true;

});

});

});

}

});

Edit: Sorry for the indenting. They won't let me fix it.

[#3 · Accepted solution]

@Pulak2409 Multiple APIs to do this.

REST API https://docs.microsoft.com/en-us/sharepoint/dev/sp-add-ins/working-with-folders-and-files-with-rest

You can also use CSOM using FileCreationInformation https://docs.microsoft.com/en-us/sharepoint/dev/solution-guidance/upload-large-files-sample-app-for-...

You have the option to overwrite files in both scenarios