// get user_afetch("/items",{headers:{"Accept": "application/json","Content-Type": "application/json","x-login-uuid": login_a}}).then((response)=>{returnresponse.json();}).then((json)=>{console.log("user a :"+JSON.stringify(json));});// get user_bfetch("/items",{headers:{"Accept": "application/json","Content-Type": "application/json","x-login-uuid": login_b}}).then((response)=>{returnresponse.json();}).then((json)=>{console.log("user b :"+JSON.stringify(json));});