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javascript string null or empty

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YOU.com answered on August 1, 2019 Popularity 9/10 Helpfulness 4/10

answer javascript string null or empty

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javascript string null or empty

Comment

function isNullOrEmpty(str) {
  return str === null || str.trim() === '';
}

// Usage example
const myString = null;
const result = isNullOrEmpty(myString);
console.log(result); // Output: true

Popularity 9/10 Helpfulness 4/10 Language javascript

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Contributed on Sep 12 2023

YOU.com

0 Answers Avg Quality 2/10

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How to Check for a Null or Empty String in JavaScript

Comments(1)

let myStr = null;

if (myStr === null || myStr.trim() === "") {
  console.log("This is an empty string!");
} else {
  console.log("This is not an empty string!");
}

/*
This will return:

"This is an empty string!"
*/

Popularity 10/10 Helpfulness 8/10 Language javascript

Source: www.freecodecamp.org

Tags: javascript j

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Contributed on Jul 07 2022

OHIOLee

0 Answers Avg Quality 2/10

javascript if string empty

Comment

// Test whether strValue is empty or is None
if (strValue) {
    //do something
}
// Test wheter strValue is empty, but not None 
if (strValue === "") {
    //do something
}

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on May 25 2020

Arno Deceuninck

0 Answers Avg Quality 2/10

javascript null or empty

Comment

var myVar=null;

if(myVar === null){
    //I am null;
}

if (typeof myVar === 'undefined'){
    //myVar is undefined
}

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Aug 01 2019

Grepper

0 Answers Avg Quality 2/10

Check for a Null or Empty String in JavaScript

Comment

let myStr = null;

if (myStr === null || myStr.trim() === "") {
  console.log("This is an empty string!");
} else {
  console.log("This is not an empty string!");
}

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: www.freecodecamp.org

Tags: javascript j

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Contributed on Jul 07 2022

Adventurous Ant

0 Answers Avg Quality 2/10

js if string not empty

Comment

if (!str.length) { ...

Popularity 10/10 Helpfulness 4/10 Language javascript

Source: stackoverflow.com

Tags: javascript j

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Contributed on Feb 26 2021

Borma

0 Answers Avg Quality 2/10

javascript check string empty

Comment

let str = "";
if (Boolean(str))
  console.log("This is not an empty string!");
else
  console.log("This is an empty string!");

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on Aug 13 2022

Emad Sala

0 Answers Avg Quality 2/10

if string is null javascript

Comment

function empty(e) {
  switch (e) {
    case "":
    case 0:
    case "0":
    case null:
    case false:
    case undefined:
      return true;
    default:
      return false;
  }
}

empty(null) // true
empty(0) // true
empty(7) // false
empty("") // true
empty((function() {
    return ""
})) // false

Popularity 7/10 Helpfulness 3/10 Language javascript

Source: stackoverflow.com

Tags: javascript null

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Contributed on Feb 03 2023

Gabriel Metre Resende

0 Answers Avg Quality 2/10

javascript check if undefined or null or empty string

Comment

// simple check do the job
if (myString) {
 // comes here either myString is not null,
 // or myString is not undefined,
 // or myString is not '' (empty).
}

Popularity 10/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript j

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Contributed on May 02 2020

Scriper

0 Answers Avg Quality 2/10

if string is null javascript

Comment

function empty(str)
{
    if (typeof str == 'undefined' || !str || str.length === 0 || str === "" || !/[^\s]/.test(str) || /^\s*$/.test(str) || str.replace(/\s/g,"") === "")
        return true;
    else
        return false;
}
 Run code snippet

Popularity 7/10 Helpfulness 3/10 Language javascript

Source: stackoverflow.com

Tags: javascript null nul

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Contributed on Feb 03 2023

Gabriel Metre Resende

0 Answers Avg Quality 2/10

javascript string null or empty

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