I've got an input field with a background image to separate the letters in boxes.
The problem appear when I reach the end of the input: the input view scrolls down due to the cursor position placed after the last letter.
How can I avoid the view to scroll in my inputs?
I've tried to add an "overflow:hidden" and to set a "maxlength", the problem is still there.
edit: a simple demonstration (My goal is to avoid the "move effect" when the 4th letter is entered)
I see 2 solutions :
Like said in comment, you could slightly increase the with of your input to prevent this 'jump' behavior
like : width : 202px
If you can't/ don't want to change the width of your input you can prevent the keypress event, then check the length of the input value. If it less than 4 add it else do nothing.
var t = $('#input-form');
t.keypress( function(event){
//Prevent the value to be added
event.preventDefault();
//Regex that you can change for whatever you allow in the input (here any word character --> alphanumeric & underscore)
var reg = /\w/g;
//retreive the key pressed
var inputChar = String.fromCharCode(event.which);
//retreive the input's value length
var inputLength = t.val().length;
if ( reg.test(inputChar) && (inputLength < 4) ) {
//if input length < 4, add the value
t.val(t.val() + inputChar);
}else{
//else do nothing
return;
}
});
var t = document.getElementById('input-form');
t.addEventListener('keypress', function(event){
//Prevent the value to be added
event.preventDefault();
//Regex that you can change for whatever you allow in the input (here any word character --> alphanumeric & underscore)
var reg = /\w/g;
//retreive the input's value length
var inputChar = String.fromCharCode(event.which);
//retreive the input's value length
var inputLength = t.value.length;
if ( reg.test(inputChar) && (inputLength < 4) ) {
//if input length < 4, add the value
t.value = t.value + inputChar;
}else{
//else do nothing
return;
}
});
I've made a small alteration to your field width in your CSS code, see below:
input {
width: 205px;
height: 50px;
font-size: 30px;
font-family: "Courier", monospace;
letter-spacing: 28px;
text-indent: 18px;
position: fixed;
padding: 0;
margin: 0;
white-space: nowrap;
overflow: hidden;
}
Try typing something now and keep an eye on the fourth character.
Hope this helps.
Sohail.
inputslightly wider so that there's space for the carat after the fourth character: jsfiddle.net/n23dfs4t/1