Working on a client project, we had recently used jQuery Masked Input (http://digitalbush.com/projects/masked-input-plugin/) for the Mobile Number Mask Input. It was working fine and client was happy with this, until a request came from client as below:
Error: If a validation fails in the Contact # field, the alert appears & at the same time the field is blanked out.
Expected Behavior: Show the alert, but do not remove the already entered numbers. It can be a case that the user has entered 6 digits of the mobile # and forgot to enter the last one, but it is annoying to enter the complete number again.
When we replied that in this case we need to remove the mask and apply a different validation, the response was: “The users have gone used to it now & like the option. Can’t it remain with a validation in place?”
Then we started the research and were able to successfully accomplish the task with the following changes:
The following lines in the function checkVal(allow):
if (!allow && lastMatch + 1 < partialPosition) {
input.val("");
clearBuffer(0, len);
} else if (allow || lastMatch + 1 >= partialPosition) {
writeBuffer();
if (!allow) input.val(input.val().substring(0, lastMatch + 1));
}
return (partialPosition ? i : firstNonMaskPos);
were changed to:
if (!allow && lastMatch + 1 < partialPosition) {
if (lastMatch == -1) {
input.val("");
clearBuffer(0, len);
}
} else if (allow || lastMatch + 1 >= partialPosition) {
writeBuffer();
if (!allow) input.val(input.val().substring(0, lastMatch + 1));
}
return (partialPosition ? i : firstNonMaskPos);
What we are doing is pretty simple. We check for “lastMatch”which stores the index of last matched input character. If none is matched, then only we clear the input field, else the input remains as it is. While validating the input on form submit, we check the occurance of the underscore (“_”) character like below:
var obj1 = document.getElementById('txtContactNo');
if (obj1.value == '' || obj1.value.indexOf("_") > -1)
{
alert('Please specify a valid Mobile # e.g. 0091-1234567890');
return false;
}
Have a quality time ahead.
| If a validation fails in any of the Contact # fields, the alert appears & at the same time the field is blanked out. |
[...] jQuery Masked Input: Prevent field blank out on blur | Team IT0091 Speaks [...]
thnx dear. i believe it was helpful to u
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Hope my comment makes it amongst all the spam above! (note the absence of reference to the actia; content of the post) I’m an actual human being and not a spam bot… I found this masked input change exactly what I was looking for. It should’ve been one of the options actually, maybe you could further alter it that way or I could do that as well in which case I’ll definitely quote ur URL. Thanks a lot anyway!
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I added settings.clearOnError that defaults to true, and then added an additional condition to yours:
if(settings.clearOnError && lastMatch == -1)
Thanks a lot, you saved me a lot of time!
PS: sorry, the exact condition is:
if(settings.clearOnError || (!settings.clearOnError && lastMatch == -1)) {
Settings was first initialized earlier…
settings = $.extend({
placeholder: “_”,
completed: null,
clearOnError: true
}, settings);
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