Retrieve precise information using JavaScript fetch

Question

Retrieve precise information using JavaScript fetch

Seeking guidance on how to extract specific data using JavaScript fetch. Currently working with the following API: . I am struggling to select just one currency, as my forEach loop displays all currencies but I want to display only one. To show all currencies, I have been using:

${data.rates[rate].name}
${data.rates[rate].rate}

In an attempt to display just one currency, I have tried multiple approaches, but this one seems most logical:

${data.rates[rate].name == dkk}
${data.rates[rate].rate}

However, this does not work. Does anyone know how to specify and display only a single set of data?

javascript json

Answer 1

Answer №1

${data.rates[rate].name == dkk}

It appears that the ${} syntax used here is for JavaScript string interpolation. The expression being evaluated here is whether the value of .name is equal to dkk. This likely results in displaying either "true" or "false.

If you aim to display the name only if it matches dkk, you can achieve this by first defining a variable like so:

let displayName = '';
if (data.rates[rate].name === dkk) {
    displayName = data.rates[rate].name;
}

Then you can interpolate ${displayName} to achieve the desired output.

If this isn't the intended functionality, additional code context would be needed for further assistance.

Answer 2

${data.rates[rate].name == dkk}

It appears that the ${} syntax used here is for JavaScript string interpolation. The expression being evaluated here is whether the value of .name is equal to dkk. This likely results in displaying either "true" or "false.

If you aim to display the name only if it matches dkk, you can achieve this by first defining a variable like so:

let displayName = '';
if (data.rates[rate].name === dkk) {
    displayName = data.rates[rate].name;
}

Then you can interpolate ${displayName} to achieve the desired output.

If this isn't the intended functionality, additional code context would be needed for further assistance.

Answer 3

Answer №2

let output = '';
for (let currency in data.rates) {
    const rate = data.rates[currency];
    output += `${rate.name} ${rate.rate}<br>`
}

Check out the reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...in#Examples

Answer 4

let output = '';
for (let currency in data.rates) {
    const rate = data.rates[currency];
    output += `${rate.name} ${rate.rate}<br>`
}

Check out the reference: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...in#Examples

Answer 5

Answer №3

  fetch('https://apiv2.bitcoinaverage.com/constants/exchangerates/global')
   .then(response => response.json())
   .then(result => result.rates.AED)
   .then(console.log)

By using the fetch method, a Promise is returned allowing you to work with the data using .then. In the provided code snippet, .then is utilized to extract and log the exchange rate for United Arab Emirates (AED) from the fetched data. I trust this explanation clarifies the process.

Answer 6

  fetch('https://apiv2.bitcoinaverage.com/constants/exchangerates/global')
   .then(response => response.json())
   .then(result => result.rates.AED)
   .then(console.log)

By using the fetch method, a Promise is returned allowing you to work with the data using .then. In the provided code snippet, .then is utilized to extract and log the exchange rate for United Arab Emirates (AED) from the fetched data. I trust this explanation clarifies the process.

Answer 7

Answer №4

Hey there, I'm the original poster! I thought it might be helpful to share how I resolved this issue for anyone who comes across it later on:

rates.forEach(currency=>{
 if(data.rates[currency].name == 'Danish Krone'){ //if currency name == 'something'
 output = output +
 `
 ${data.rates[currency].name}
 ${data.rates[currency].rate}<br>
 `
}                    
})

Essentially, I learned that you can't simply write ".name == dkk" to retrieve the currency's name. Instead, I had to create an if statement to specifically check if the name matches the desired 'currency name'. Additionally, in this particular API, I couldn't use the abbreviated version (e.g., DKK) and had to input the full name in the if statement. Once I made those adjustments, obtaining the name and rate of the currency followed the same process as looping through all the rates. Hopefully this explanation proves useful to someone down the line who finds themselves in a similar situation :)

Answer 8

Hey there, I'm the original poster! I thought it might be helpful to share how I resolved this issue for anyone who comes across it later on:

rates.forEach(currency=>{
 if(data.rates[currency].name == 'Danish Krone'){ //if currency name == 'something'
 output = output +
 `
 ${data.rates[currency].name}
 ${data.rates[currency].rate}<br>
 `
}                    
})

Essentially, I learned that you can't simply write ".name == dkk" to retrieve the currency's name. Instead, I had to create an if statement to specifically check if the name matches the desired 'currency name'. Additionally, in this particular API, I couldn't use the abbreviated version (e.g., DKK) and had to input the full name in the if statement. Once I made those adjustments, obtaining the name and rate of the currency followed the same process as looping through all the rates. Hopefully this explanation proves useful to someone down the line who finds themselves in a similar situation :)

Retrieve precise information using JavaScript fetch

Answer №1

Answer №2

Answer №3

Answer №4

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