Can I set file name in blob data when I upload data to server using html5?
According to FormData, you should be able to add a filename parameter to your data.append() call as follows: data.append(“ImageFileField”, blob, “imageFilename.png”);
xmlhttprequest
Advantages of using application/json over text/plain? [closed]
Let’s assume that you are talking about using JSON versus a custom format (using MIME type text/plain) for passing structured data. Performance may be broken down into different components; e.g. relative time taken to encode the content into the format, relative time taken to decode the format to give you the original content, and relative … Read more
Get HTML code using JavaScript with a URL
Use jQuery: $.ajax({ url: ‘your-url’, success: function(data) { alert(data); } }); This data is your HTML. Without jQuery (just JavaScript): function makeHttpObject() { try {return new XMLHttpRequest();} catch (error) {} try {return new ActiveXObject(“Msxml2.XMLHTTP”);} catch (error) {} try {return new ActiveXObject(“Microsoft.XMLHTTP”);} catch (error) {} throw new Error(“Could not create HTTP request object.”); } var request … Read more
How to make a simple JSONP asynchronous request in Angular 2?
In the latest version of Angular Import HttpClientModule and HttpClientJsonpModule modules in your app module’s definition file import { HttpClientModule, HttpClientJsonpModule } from ‘@angular/common/http’; @NgModule({ declarations: [ //… List of components that you need. ], imports: [ HttpClientModule, HttpClientJsonpModule, //… ], providers: [ //… ], bootstrap: [AppComponent] }) Inject http and map rxjs operator into … Read more
Hide 401 console.error in chrome dev tools getting 401 on fetch() call [duplicate]
Unfortunately, this cannot be done, as this type of message in the console is printed by chrome itself. Repressing this type of message has been debated for years, but the consensus seems to be that this message is desirable – see this discussion. Just in case you’re interested: As per this comment, the reason we’re … Read more
Why do browser APIs restrict cross-domain requests?
If I visit a malicious website, I want to be sure that : It cannot read my personal data from other websites I use. Think attacker.com reading gmail.com It cannot perform actions on my behalf on other websites that I use. Think attacker.com transferring funds from my account on bank.com Same Origin Policy solves the … Read more
Retrieving binary file content using Javascript, base64 encode it and reverse-decode it using Python
So I’m answering to myself — and sorry for that — but I think it might be useful for someone as lost as I was 😉 So you have to use ArrayBuffer and set the responseType property of your XMLHttpRequest object instance to arraybuffer for retrieving a native array of Bytes, which can be converted to base64 … Read more
Why cookies and set-cookie headers can’t be set while making xmlhttprequest using setRequestHeader?
I am sure you would have gone through the working draft and found The above headers are controlled by the user agent to let it control those aspects of transport. Firstly we need to understand, These are standards working as guidelines for interoperability of functions between different browsers. It’s not mandated for the browser and … Read more
jQuery.getJSON – Access-Control-Allow-Origin Issue
It’s simple, use $.getJSON() function and in your URL just include callback=? as a parameter. That will convert the call to JSONP which is necessary to make cross-domain calls. More info: http://api.jquery.com/jQuery.getJSON/
Access denied in IE 10 and 11 when ajax target is localhost
Internet Explorer raises this error as part of its security zones feature. Using default security settings, an “Access is Denied” error is raised when attempting to access a resource in the “Local intranet” zone from an origin in the “Internet” zone. If you were writing your Ajax code manually, Internet Explorer would raise an error … Read more