he.js

const url = 'http://localhost:5050/vehicles/' + search_params.get("id");
fetch(url)
    .then(response=>{
        if (response.ok){
            return response.json();
        }
    })
    .then(jresp=> {
        get_vehicle_images(jresp);
        populate_vehicle_details(jresp);
    })
    .catch(error=>{console.log('Error: ' + error)});

    function book(){
        fetch(book_url, {
            headers:{"Autorization": "Bearer " + localStorage.aft_token},
            method: 'POST'
        })
        .then(response => {
            if (response.ok) {
                return response.json();
            }
            throw new Error("Error caught")
        })
        .then(resp=>{
            alert(resp.message);
            window.location.assign("../../index.html");
        })
        .catch(error)
    }