Pre-recorded question

Question #4
How to check for an empty JavaScript string ?
Answer

The best way to check if a JavaScript string is empty (whether there's any value) is to use the following:

if (myString) {
    // Do something
}


The following alternative will return true only if the type of myString is a string and the string is empty.

if (myString === '') {
    // Do something
}

You may also want to check if a string is empty or contains only spaces.

5 events in history
Answer by Alphonsio 04/27/2020 at 06:25:28 PM

The best way to check if a JavaScript string is empty (whether there's any value) is to use the following:

if (myString) {
    // Do something
}


The following alternative will return true only if the type of myString is a string and the string is empty.

if (myString === '') {
    // Do something
}

You may also want to check if a string is empty or contains only spaces.

Answer by Alphonsio 04/27/2020 at 05:40:24 PM

The best way to check whether there's any value is to use the following:

if (myString) {
    // Do something
}


The following alternative will return true only if the type of myString is a string and the string is empty.

if (myString === '') {
    // Do something
}

You may also want to check if a string is empty or contains only spaces.

Question by Alphonsio 04/27/2020 at 04:50:06 PM
How to check for an empty JS string ?
Answer by Alphonsio 04/27/2020 at 04:49:37 PM

The best way to check whether there's any value is to use the following:

if (myString) {
    // Do something
}


The following alternative will return true only if the type of myString is a string and the string is empty.

if (myString === '') {
    // Do something
}

Question by Alphonsio 04/27/2020 at 04:23:10 PM
How to check for an empty JavaScript string ?
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