How do I change the value of a textarea?

• 0

  function inWall(){
      let input2 = document.getElementById("Wall").value 
      let b = document.querySelector("textarea")
  
      if (input2.length < width * height){
          for (i = input2.length; i < width * height; i ++){  //wigth i height var переменные і работают 
                 input2 += '0' // input успешно меняется 
          }
          b.setAttribute('value', input2) // Value осталось не измененным 
      }
  }

  
  
  

  <div>
          <form action="">
              <textarea id = "Wall" value = "" rows = ""  ></textarea>
              
              <input  type = "button" name = "entered" value = "Submit" onclick="inWall()" ></button>
          </form>
      </div>

  JavaScript Elizabeth White, Jan 16, 2019

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2 Answers
• 0
  The textarea tag has no value attribute. Use innerText
  
  b.innerText = input2;

  Anonymous

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• 0
  The value attribute is not equal to the value property.
  
  

  document.querySelector("textarea").value = 'bla-bla';

  Anonymous

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