API上传数据大小限制

Question

Suppose I want to upload a CSV file using javascript and send that file to my REST API.

What can be the maximum size of the file that I can upload which can be handled by my API ?

I searched and somewhat got to know that file size cannot exceed 10Mb. Please correct me if I am wrong.

Answer 1

you can located the input tag using document.querySelector or using jQuery $() and in that tag there is a nested property called size ( input.files[0].size ) this property return the size of you file in a byte. from there all you need to is bind to the onchange event of the input , check the file size and if it's over 10MB alert a message and clear the input

 document.querySelector('[type="file"]').addEventListener('change',function(e){ if(e.target.files[0].size > 10000000){ alert('file size greater then 10MB'); e.target.value = null } })

 <input type="file"/>