Answers for "javascript check if undefined or null or empty string"

7

javascript check if undefined or null

if( typeof myVar === 'undefined' || myVar === null ){
    // myVar is undefined or null
}
Posted by: Guest on October-23-2019
1

js if string not empty

if (!str.length) { ...
Posted by: Guest on February-26-2021
7

javascript check if undefined or null or empty string

// simple check do the job
if (myString) {
 // comes here either myString is not null,
 // or myString is not undefined,
 // or myString is not '' (empty).
}
Posted by: Guest on May-02-2020

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