Input Text maxLength Property

❮ Input Text Object

Example

Get the maximum number of characters allowed in a specific text field:

var x = document.getElementById("myText").maxLength;
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Description

The maxLength property sets or returns the value of the maxlength attribute of a text field.

The maxLength attribute specifies the maximum number of characters allowed in a text field.

Tip: To set or return the width of a text field, in number of characters, use the size property.


Browser Support

Property
maxLength Yes Yes Yes Yes Yes

Syntax

Return the maxLength property:

textObject.maxLength

Set the maxLength property:

textObject.maxLength = number

Property Values

Value Description
number Specifies the maximum number of characters allowed in the text field


Technical Details

Return Value: A Number, representing the maximum number of characters allowed in the text field

More Examples

Example

Set the maximum number of characters allowed in a text field:

document.getElementById("myText").maxLength = "4";
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Example

Jump to the next text field when a field's maxlength has been reached:

if (y.length == x.maxLength) {
  var next = x.tabIndex;
  if (next < document.getElementById("myForm").length) {
    document.getElementById("myForm").elements[next].focus();
  }
}
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Related Pages

HTML reference: HTML <input> maxlength attribute


❮ Input Text Object
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