In case you are using any client-side JavaScript framework, authorization headers can be sent for the desired interaction with WP API. The DELETE request would then be sent by another jQuery.ajax() method like this:
$.ajax({
url: 'http://something/wp-json/wp/v2/posts/25',
method: 'DELETE',
crossDomain: true,
beforeSend: function ( xrh ) {
xrh.setRequestHeader( 'Authorization', 'Basic ' + Base64.encode( 'username:password' ) );
},
success: function( data, txtStatus, xrh ) {
console.log( data );
console.log( xrh.status );
}
});
In this example, the BASE64 is considered to be an object used for encoding a string.
This is a way of cross-browser encoding of a string within JavaScript.
The Authorization header was used in the preceding example, and the setRequestHeader() method within xhr object was passed as an argument to the beforeSend...