Client side updates of SharePoint stuff

get-site-info.js

fetch('/_api/site', {headers:{accept:'application/json'}}).then( x => x.json().then( y => console.log(y)))

get-web-info.js

fetch('/_api/web', {headers:{accept:'application/json'}}).then( x => x.json().then( y => console.log(y)))

update-header-emphasis.js

fetch('/_api/contextinfo', 
  {method:'POST', headers: { "Accept": "application/json; odata=verbose"}}).then( r => 
  r.json().then( d => {
    console.log(d.d.GetContextWebInformation.FormDigestValue)
    fetch('/_api/web', 
    {method:'POST', headers:{'content-type':'application/json;odata=verbose',accept:'application/json;odata=verbose','X-RequestDigest':d.d.GetContextWebInformation.FormDigestValue, 'x-http-method':'MERGE'}, 
      body: JSON.stringify({
        HeaderEmphasis:3, // 0-3
        HeaderLayout:2, // 0-2
        MegaMenuEnabled: true,
        "__metadata":{"type":"SP.Web"}})}).then( x => 
        console.log(x)
     )
}
))