To force user to enter only number in the Text box, we can set the
type attribute of the input element to “number”.
<body> <form> Number : <input type="number" name="myNumber1" id="myNumber1" required /> </form> </body>
In case user enters some text that is not a number, the textbox value is treated as empty (in the Opera Browser).
We can also specify a step value to this element so that it forces user to enter the value multiple of that.
<input type="number" name="myNumber1" id="Number1" step="4" />
step attribute whose value is 4. Above code will only allow user to enter the number that is multiple of 4, eg. 4, 8, 12 etc.
To restrict maximum and minimum value that can be entered into the text box, we can set
<input type="number" name="myNumber" id="myNumber" min="1" max="10" />
Above code snippet allows value between 1 to 10 in the textbox.
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