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HTML - minlength Attribute
The HTML minlength attribute is used to define the minimum number of characters that a user can enter into an input or textarea field. The minimum length attribute must be an integer value either 0 or greater.
If no minlength attribute is specified, or any invalid value is specified, the input has no minimum length. The entered value length must be greater than or equal to the minlength value.
Syntax
Following is the syntax of the HTML minlength attribute −
<tag minlength = 'value'></textarea>
Where the value can be any integer value(0 or higher).
Example
In the following example, we are going to use the minlength attribute with the input type=text.
<!DOCTYPE html> <html lang="en"> <head> <title>HTML 'minlength' attribute</title> </head> <body> <!--Example of the 'minlength' attribute--> <p>HTML 'minlength' attribute example</p> <form> Name: <input type="text" minlength="4"> <button>Submit</button> </form> </body> </html>
When we run the above code, it will generate an output consisting of the input field along with a click button on the webpage. when the user clicks tries to enter text of length below 4 it will throw a exception.
Example
Considering the another scenario, where we going to use the minlength attribute with the textarea element.
<!DOCTYPE html> <html lang="en"> <head> <title>HTML 'minlength' attribute</title> </head> <body> <!--Example of the 'minlength' attribute--> <p>HTML 'minlength' attribute example</p> <form> Write your messages: <br> <textarea cols="30" rows="8" placeholder="Write..." minlength="10"></textarea> <button>Send</button> </form> </body> </html>
On running the above code, the output window will pop up displaying the textarea filled with data along with a click button on the webpage. when the user enter the text below minlength it will throw exception.
Example
Let's look at the following example, where we are going to use the minlength and maxlength attributes with the input tag.
<!DOCTYPE html> <html lang="en"> <head> <title>HTML 'minlength' attribute</title> </head> <body> <!--Example of the 'minlength' attribute--> <p>HTML 'minlength' attribute example</p> <form> Enter a text (between minlength 6 to maxlength 10): <input type="text" minlength="6" maxlength="10"> <button>Submit</button> </form> </body> </html>
When we run the above code, it will generate an output consisting of the input field which is applied with min and maxlength attributes along with a click button on the webpage.
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