I'm interpreting your question as "How to create an HTML form to search for a city?" If that's not what you were asking, feel free to provide more details.

To create an HTML form to search for a city, you can use an input field of type "text" and submit button inside a form element. Here is an example code using HTML:

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<form>
  <label for="city">Enter city name:</label>
  <input type="text" id="city" name="city" required>
  <button type="submit">Search</button>
</form>

In this code snippet, we have a form element that contains a label element with for attribute which matches the id attribute in the input element. This is to associate the label with its corresponding input field. The input element is of type "text" and has an id attribute of "city" and a name attribute of "city". The required attribute specifies that the input field must be filled out before the form is submitted. Finally, we have a submit button.

When the user submits the form by clicking on the "Search" button, the data from the input field will be submitted to the server. You will need some server-side code (in a language like PHP or JavaScript) to handle the form submission and execute the search functionality.

To show the city with the Geolocation API, you need to make a request to a Geocoding API with the user's current latitude and longitude coordinates and parse the city from the API response.

Here's an example of how to do this using JavaScript:

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// First, get the user's location coordinates using the Geolocation API
if (navigator.geolocation) {
  navigator.geolocation.getCurrentPosition(showCity);
} else {
  console.log("Geolocation is not supported by this browser.");
}

// Then, pass the location coordinates to a Geocoding API to get the city name
function showCity(position) {
  const latitude = position.coords.latitude;
  const longitude = position.coords.longitude;

  // Make a request to a Geocoding API (e.g. Google Maps Geocoding API)
  const url = `https://maps.googleapis.com/maps/api/geocode/json?latlng=${latitude},${longitude}&key=YOUR_API_KEY`;

  fetch(url)
    .then((response) => response.json())
    .then((data) => {
      // Parse the city name from the API response
      const city = data.results[0].address_components.find((component) =>
        component.types.includes("locality")
      ).long_name;

      console.log(`Your city is ${city}.`);
    })
    .catch((error) => console.log(error));
}

Note: You need to replace YOUR_API_KEY in the URL with your own Google Maps API key. Also, keep in mind that using a Geocoding API may incur additional costs beyond what the Geolocation API already offers.

To display the temperature and name of a city on a webpage, you can use an API (Application Programming Interface) like OpenWeatherMap. You can make a request to the API using JavaScript and then display the city name and temperature on your webpage.

Here's an example using JavaScript:

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// replace CITY_NAME and API_KEY with your own values
const apiURL = `https://api.openweathermap.org/data/2.5/weather?q=CITY_NAME&appid=API_KEY&units=metric`;

async function getWeather() {
  const response = await fetch(apiURL);
  const weatherData = await response.json();
  const cityName = weatherData.name;
  const temperature = weatherData.main.temp;
  document.getElementById("city-name").innerText = cityName;
  document.getElementById("temperature").innerText = temperature + "°C";
}

getWeather();

In this example, we're using the fetch function to make a request to the OpenWeatherMap API. We pass in the city name and API key as parameters in the URL.

Once we get the weather data, we extract the city name and temperature from the response JSON object. We then set the innerText of two HTML elements with the id "city-name" and "temperature" to display the city name and temperature on the page.

Note that you'll need to sign up for an API key with OpenWeatherMap to use their API. You can follow their documentation to get started: https://openweathermap.org/api.

To link the city to the JS alert sentence, you need to first create a variable in JavaScript that stores the name of the city. Then, you can use that variable when constructing the alert message. Here's an example:

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<!DOCTYPE html>
<html>
  <head>
    <title>City Weather</title>
  </head>
  <body>
    <h1>Welcome to City Weather</h1>
    <p>Click the button to see today's weather in your city:</p>
    <button onclick="showWeather()">Check Weather</button>

    <script>
      function showWeather() {
        let city = "New York"; // replace this with the name of your city
        alert(`The weather in ${city} today is sunny!`);
      }
    </script>
  </body>
</html>

In this example, the showWeather() function creates a variable called city, which is set to "New York" in this case. You can replace this with the name of the city you want to display the weather for. Then, the function constructs an alert message using a template literal that includes the variable.

When the button is clicked, the showWeather() function is called, which displays the alert message with the city name included.

To accomplish this, you would need to create a function that retrieves the desired city and temperature values and then displays them when the button is clicked. Assuming you are working with web development, here's an example using JavaScript:

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// HTML code
<button onclick="displayCityAndTemp()">Display City and Temperature</button>
<p id="city"></p>
<p id="temp"></p>

// JavaScript function
function displayCityAndTemp() {
  // Retrieve city and temperature values
  const city = "New York";
  const temp = "72°F";
  // Display city and temperature values
  document.getElementById("city").innerHTML = `City: ${city}`;
  document.getElementById("temp").innerHTML = `Temperature: ${temp}`;
}

In this example, the displayCityAndTemp() function is triggered when the button is clicked. It retrieves the city and temperature values (in this case hardcoded for demo purposes), and then uses document.getElementById() to update the HTML of the

elements with the IDs "city" and "temp" to display the values.

Note: Depending on your specific use case, you may need to modify this code to retrieve the desired city and temperature values (e.g. from a database or API), but the basic idea of using a function triggered by a button click remains the same.

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const CityTemperature = () => {
  const city = "San Francisco"; 
  const temperature = "70°F"; 

  return (
    <p>The temperature in {city} is {temperature}.</p>
  )
}; 

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var city = 'New York';
var country = 'United States';

console.log(`I am from ${city}, ${country}.`);

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let city = 'Toulouse';
let country = 'France';
console.log(`I am from ${city}, in ${country}.`);

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let city = "Pretoria";
let country = "South Africa";
console.log(`I am from ${city}, in ${country}`);

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city = 'Toulouse'
country = 'France'
print("I am from %s, in %s" %(city, country))