Category: JavaScript

To convert a base64 string representing PDF to a blob with JavaScript, we can use fetch.

For instance, we write:

const pdfStr = 'data:application/pdf,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'

const b64toUrl = async (base64Data) => {
  const r = await fetch(base64Data);
  const blob = await r.blob();
  return blob
}
const load = async () => {
  console.log(await b64toUrl(pdfStr))
}
load()

to define the b64toUrl function that gets the base64Data URL string.

In it, we call fetch with base64Data to load the URL into the r response object.

Then we get a blob from it with r.blob.

As a result, the console log logs a blob with MIME type application/pdf.

Sometimes, we want to show or hide password on click a of button using JavaScript.

In this article, we’ll look at how to show or hide password on click a of button using JavaScript.

How to show or hide password on click a of button using JavaScript?

To show or hide password on click a of button using JavaScript, we can set the type attribute of the input to to text to show the password and set it to password to hide it.

For instance, we write:

<input type='password'>
<button>
  toggle show/hide
</button>

to add the password input and a button to show or hide the password in the input.

Then we write:

const input = document.querySelector('input')
const button = document.querySelector('button')
button.onclick = () => {
  if (input.type === 'password') {
    input.type = 'text'
  } else {
    input.type = 'password'
  }
}

to select the input and button with querySelector.

Next, we set button.onclick to a function that checks if the type attribute of the input is password with input.type === 'password'.

If it’s true, then we set input.type to 'text' to show the password.

Otherwise, we set input.type to 'password' to hide it.

Conclusion

To show or hide password on click a of button using JavaScript, we can set the type attribute of the input to to text to show the password and set it to password to hide it.

Sometimes, we want to fix date validation not validating February 31 with JavaScript.

In this article, we’ll look at how to fix date validation not validating February 31 with JavaScript.

How to fix date validation not validating February 31 with JavaScript?

To fix date validation not validating February 31 with JavaScript, we can use some date methods.

For instance, we write:

const isValidDate = (year, month, day) => {
  const d = new Date(year, month, day);
  return d.getFullYear() === year && d.getMonth() === month && d.getDate() === day
}

console.log(isValidDate(2022, 1, 1))
console.log(isValidDate(2022, 1, 31))

to define the isValidDate function that checks the year, month, and day of a date.

In it, we create a new Date instance with them.

Then we get the year, month, and day values from d to see if they’re the same as the ones from the arguments.

If they’re the same, then we return true.

Otherwise, we return false.

Therefore, the first console log logs true since it’s a valid date and the 2nd log logs false since it’s not.

Conclusion

To fix date validation not validating February 31 with JavaScript, we can use some date methods.

Sometimes, we want to add template literals with a forEach in it with JavaScript.

In this article, we’ll look at how to add template literals with a forEach in it with JavaScript.

How to add template literals with a forEach in it with JavaScript?

To add template literals with a forEach in it with JavaScript, we should replace forEach with map.

For instance, we write:

const arr = ['apple', 'orange', 'grape']
const options = arr
  .map(a => {
    return `<option value='${a}'>${a}</option>`
  })
  .join('')
const str = `<select>${options}</select>`
console.log(str)

to call arr.map with a callback that maps the values in arr to an option element string.

Then we call join to combine the strings from the array returned by map into a single string.

Next, we put the options string into the str template literal.

As a result, str is:

<select><option value='apple'>apple</option><option value='orange'>orange</option><option value='grape'>grape</option></select>

Conclusion

To add template literals with a forEach in it with JavaScript, we should replace forEach with map.

Sometimes, we want to fix the issue when we call JavaScript array push with multiple objects and gets undefined.

In this article, we’ll look at how to fix the issue when we call JavaScript array push with multiple objects and gets undefined.

How to fix the issue when we call JavaScript array push with multiple objects and gets undefined?

To fix the issue when we call JavaScript array push with multiple objects and gets undefined, we should get the latest value of the array we call push on.

For instance, we write:

const arr = [1, 2, 3]
arr.push(...[4, 5, 6])
console.log(arr)

to call arr.push with the [4, 5, 6] spread as the arguments of push with the spread operator.

Therefore, from the console log, arr is [1, 2, 3, 4, 5, 6] since push appends the values into arr in place.

Conclusion

To fix the issue when we call JavaScript array push with multiple objects and gets undefined, we should get the latest value of the array we call push on.