Storing null values in variables in JavaScript can be accomplished by simply assigning the value

 let imageElement = document.getElementById('ImgCorrectConditon2'); //imageElement is null
 if (imageElement === null) {
     console.log('Exiting current line as control is null');
     return;
 }
 imageElement.style.visibility = 'hidden';

If it's null, an exception/error will occur and the next lines of code will not execute. How can we prevent execution if the control is null?

Answer №1

Is it enough to just verify for the existence of null value?

if(img2 !== null) {
   img2.style.visibility = 'hidden';
}

Answer №2

Give this snippet a go and make sure to verify that img2 is not null

const imageElement = document.getElementById('ImgCorrectCondition');// Assume img2 is null
 if(imageElement !== null )
 {  
      imageElement.style.visibility = 'hidden';
 }

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