Javascript DOM HTML Input Text readOnly Property set

Introduction

Set a text field to read-only: 

document.getElementById("myText").readOnly = true;

Click the button to set the text field to read-only.

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<!DOCTYPE html>
<html>
<body>
Name: <input type="text" id="myText">
<button onclick="myFunction()">Test</button>

<script>
function myFunction() {//from w w w  .ja  v  a 2 s  .c o  m
  document.getElementById("myText").readOnly = true;
}
</script>

</body>
</html>

The readOnly property sets or gets whether a text field is read-only.

A read-only field cannot be modified.

Value Description
true The text field is read-only
falseDefault. The text field is changeable

The readOnly property returns true if the text field is read-only, otherwise it returns false.




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