You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

846 B

id title layout permalink prev next
controlled-input-null-value Value of null for Controlled Input tips controlled-input-null-value.html children-props-type.html componentWillReceiveProps-not-triggered-after-mounting.html

Specifying the value prop on a controlled component prevents the user from changing the input unless you desire so.

You might have run into a problem where value is specified, but the input can still be changed without consent. In this case, you might have accidentally set value to undefined or null.

The snippet below shows this phenomenon; after a second, the text becomes editable.

/** @jsx React.DOM */

React.renderComponent(<input value="hi" />, mountNode);

setTimeout(function() {
  React.renderComponent(<input value={null} />, mountNode);
}, 2000);