I am trying to set the .value of my text area to a certain string that is very long. It works fine on other browsers, but on Firefox, the whole string does not show up in the textarea. I am aware that there is a maxlength attribute. I did not set this. If it is not set, is there a default value or is it unlimited?
No. From Mozilla: (link)
maxlength:
The maximum number of characters (Unicode code points) that the user can enter. If it is not specified, the user can enter an unlimited number of characters.
Related
I am new to React and whole understanding of Front end development. So excuse me if its a silly question.
I have this below html input and its maxLength is specified as 24. So it will only allow user to enter upto 24 characters. If user tries tying anything more, it wont allow and only 24 characters are seen.
<input type="text" maxlength="24" id="sessionNo" name="sessionNum" onkeypress="return isNumberKey(event)" />
Uptil now is ok. But the earlier code had maxLength="32". So users had saved upto 32 characters and that data is stored in Db. When this default value is picked and shown in input field, what will i be seeing ? Will i see truncated 24 characters only or will i see 32 characters initially and as user edits the field, it will truncate additional characters and only 24 characters will be shown. "
Any suggestions highly appreciated
It might depend on the browser, but my local test with chrome says the following: values longer than the max are shown if set programmatically (setting the value of the element), but it is not possible to add characters to the input field. They can only be removed.
This might be different for other browsers.
Thanks to #thespeciamone for the example
<input style = "width: 500px" maxlength = "24" value = "More Than Twenty Four Characters Boi. Also users can inspect element and delete the maxlength setting and now there is no limit.">
Is this possible?
I basically want to use a different font, if the length of character is over a certain count.
I would need the javascript code to plug into Custom Calculation Scripts to do the following:
If the length of the typed text in the form is greater that 30 characters, I want to use Arial Narrow, if under, then just use Arial. The font would always need to be 11 pt in all cases.
Really not a programmer here or know anything about javascript.
Add the following script to the fields custom format action.
if (event.target.value.length > 30) {
event.target.textFont = "ArialNarrow";
}
else {
event.target.textFont = "Arial";
}
The font will change after the user commits the value by pressing enter, tabbing out of the field, or clicking off the field.
HTML input element has a maxlength attribute, which prevents inputting a text longer than the maxlength . Upon pasting a text into the input box, if the text is longer than the maxlength, it will be truncated to the exact length of maxlength. How can I tell if the text was truncated or not please?
Thanks.
Assuming you want to know if the length of the value of an input element is the same as the maxlength of that element, you could do something like this (using JQuery).
var $el = $("#myInputElement")
var l = $el.val().length;
var ms = $el.attr("maxlength");
var m = parseInt(ms, 10);
// at this point m and l are maxlength and actual length
This however is not the same as a truncated value, it may simply be that exact length.
If you want to know if a user is still writing after reaching the maxlength, you could use look at the keyup event and whether or not the input is focused. However, to compare the clipboard with your input, you might have to resort to Flash.
In short, there is no good solution.
I would like to know how to create a script that overwrites text that is already in a text box. (in jquery or javascript)
Example: If I have a text phone field that says:
+1 (xxx) xxx-xxxx
When a user clicks the field, I want the characters to remain, and the focus set to the 4TH character in the text box, just after the 1.
Then, as a user types each number, it overwrites the x one by one, until all the x's are gone. But, I want the parenthesis and hyphen formatting to stay, so the users input forms around the formatting.
I would also like this form to only allow numbers, hyphens, and parenthesis, and not allow submitting if x's still exist.
If you can help me with this, THANK YOU! :-)
Try masked input plugin # [
http://digitalbush.com/projects/masked-input-plugin/
]1
Looks like it matches what you need.
How to restrict the maximum number of characters that can be entered into an HTML <textarea>? I'm looking for a cross-browser solution.
The TEXTAREA tag does not have a MAXLENGTH attribute the way that an
INPUT tag does, at least not in most standard browsers. A very simple and effective way to limit the number of characters that can be typed into a TEXTAREA tag is:
<textarea onKeyPress="return ( this.value.length < 50 );"></textarea>
Note: onKeyPress, is going to prevent any button press, any button including the backspace key.
This works because the Boolean expression compares the field's length
before the new character is added to the maximum length you want (50 in this example, use your own here), and returns true if there is room for one more, false if not. Returning false from most events cancels the default action.
So if the current length is already 50 (or more), the handler returns false,
the KeyPress action is cancelled, and the character is not added.
One fly in the ointment is the possibility of pasting into a TEXTAREA,
which does not cause the KeyPress event to fire, circumventing this check.
Internet Explorer 5+ contains an onPaste event whose handler can contain the
check. However, note that you must also take into account how many
characters are waiting in the clipboard to know if the total is going to
take you over the limit or not. Fortunately, IE also contains a clipboard
object from the window object.1 Thus:
<textarea onKeyPress="return ( this.value.length < 50 );"
onPaste="return (( this.value.length +
window.clipboardData.getData('Text').length) < 50 );"></textarea>
Again, the onPaste event and clipboardData object are IE 5+ only. For a cross-browser solution, you will just have to use an OnChange or OnBlur handler to check the length, and handle it however you want (truncate the value silently, notify the user, etc.). Unfortunately, this doesn't catch the error as it's happening, only when the user attempts to leave the field, which is not quite as friendly.
Source
Also, there is another way here, including a finished script you could include in your page:
http://cf-bill.blogspot.com/2005/05/textarea-maxlength-revisited.html
HTML5 now allows maxlength attribute on <textarea>.
It is supported by all browsers except IE <= 9 and iOS Safari 8.4. See support table on caniuse.com.
$(function(){
$("#id").keypress(function() {
var maxlen = 100;
if ($(this).val().length > maxlen) {
return false;
}
})
});
Reference Set maxlength in Html Textarea