javascript - Check if an array is empty or not - Postman - node.js - Stack Overflow

admin管理员组

文章数量:1356386

I am getting the response in this format:

{
    "test1": [],
    "test2": [],
    "test3": [],
    "test4": null,
    "test5": []
}

After sending a request, this is the response i get.

And i want to check f. ex. does test1 is empty or not.

And if it is empty it's enough to just console log.

I am getting the response in this format:

{
    "test1": [],
    "test2": [],
    "test3": [],
    "test4": null,
    "test5": []
}

After sending a request, this is the response i get.

And i want to check f. ex. does test1 is empty or not.

And if it is empty it's enough to just console log.

• javascript
• node.js

Share Improve this question Follow asked Sep 12, 2017 at 9:05 MartOMartO 4111 gold badge11 silver badge44 bronze badges 2

• 1 Check for the length of the array.. – Subburaj Commented Sep 12, 2017 at 9:06
• pm.expect(yourJsonData.test1.length).to.eql(0); – Malik Khalil Ahmad Commented Jul 7, 2023 at 10:00

Add a ment  | 

4 Answers 4

Sorted by: Reset to default 5

i think you are looking for this . using .length property of the array

let response = 
{
    "test1": [],
    "test2": [],
    "test3": [],
    "test4": null,
    "test5": []
}

if(response){
    if(response.test1 && response.test1.length == 0)
    {

      console.log("array empty");
    }
}

use javascript array.length property.

  if(test1.length){
  //if array is not empty do something here
 }
 else{
       //array is empty..do something else

  {

you should run something like this

if (response){
    if (response["test1"] && response["test1"].length>0){
        //do stuff
    }

    if (response["test2"] && response["test2"].length>0){
        //do stuff
    }
    ...
}

let response = 
{
 "test1": [],
 "test2": [],
 "test3": [],
 "test4": null,
 "test5": []
}

if(response){
   // in your case, test4 is null, so you need to check if null value too
   // try console.log(response['test4'] === response['test1']) // should be false
   if(response.testX.length && response.testX !== null)
   {
      console.log("You're awesome!");
   }
}

本文标签： javascriptCheck if an array is empty or notPostmannodejsStack Overflow