My goal here is to ensure that the value in an input element is a non-zero digit (0<x<=9). Here's the HTML tag I'm using:
<input type="number" class="cell">
I've experimented with various JavaScript solutions, but so far none have been successful. Just for reference, I am utilizing jQuery 3.2.1.
This is the solution you need:
<input type="number" class="cell" min="0" max="9" pattern="\d{0,9}">Check out this code snippet.
$('input[type=number]').keyup(function(e) {
var key = e.key
if (/[0-9]/.test(key)) {
e.target.value = key
}
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="number" class="cell" min="0" max="9" value="0">Here is the solution:
$('input[type="number"]').on('keyup click', function(){
if($(this).val() > 9){
$(this).val(9);
}
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="number" class="cell">To implement the functionality, you can utilize the input event:
$('[type=number]').on('input', function(e) {
if (this.value > 9) {
this.value = this.value.split('').pop();
}
if (this.value <= 0) {
this.value = 1;
}
})<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<input type="number" class="cell">If you want to limit input to a single digit number between 1 and 9, simply restrict any input with more than two numbers, meaning a length greater than 1.
To prevent the input of zero, you can stop the default action when the user tries to enter a zero.
$('.cell').on('keydown', function(e) {
this.value = this.value.slice(1);
if (e.which === 48 || e.which === 96) e.preventDefault();
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="number" class="cell">Check out the solution here
$('input[type="number"]').attr({
max: 10,
min: 0
});
$('input[type="number"]').keydown(function(e){
var value = $(this).val() + (parseInt(String.fromCharCode(e.which)) || 0);
if(e.which != 8 && (parseInt(value) < 0 || parseInt(value) > 10) || e.which === 189){
e.preventDefault();
return false;
}
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="number" class="cell">The limitation is set from 0 to 10 and jQuery 3.2.1 was used in the jsFiddle example.
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