Does Postgresql varchar count using unicode character length or ASCII character length?
Date : March 29 2020, 07:55 AM
seems to work fine The length limit imposed by varchar(N) types and calculated by the length function is in characters, not bytes. So 'abcdef'::char(3) is truncated to 'abc' but 'a€cdef'::char(3) is truncated to 'a€c', even in the context of a database encoded as UTF-8, where 'a€c' is encoded using 5 bytes. If restoring a dump file complained that 'Mér' would not go into a varchar(3) column, that suggests you were restoring a UTF-8 encoded dump file into a SQL_ASCII database. create schema so4249745;
create table so4249745.t(key varchar(3) primary key);
insert into so4249745.t values('Mér');
pg_dump -f dump.sql --schema=so4249745 --table=t
createdb -E SQL_ASCII -T template0 enctest
psql -f dump.sql enctest
psql:dump.sql:34: ERROR: value too long for type character varying(3)
CONTEXT: COPY t, line 1, column key: "Mér"
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textarea character limit by Javascript & PHP
Tag : php , By : Brownell
Date : March 29 2020, 07:55 AM
wish helps you You have to convert line breaks first. In JavaScript, a line break is a single newline character. When it is sent, there are two. You can normalize them: $textarea = $_POST['textarea'];
$textarea = str_replace("\r\n", "\n", $textarea);
$textarea = str_replace("\r", "\n", $textarea);
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Textarea Character Count using JavaScript
Date : March 29 2020, 07:55 AM
I wish this helpful for you The variable textarea is not present in the function's scope, you can refere to it with the this keyword function textareaLengthCheck() {
var length = this.value.length;
var charactersLeft = 500 - length;
var count = document.getElementById('count');
count.innerHTML = "Characters left: " + charactersLeft;
}
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javascript prevent copy/pasting beyond character limit in textarea
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Listen for the onpaste event. Once the event fires, grab the text from the clipboard and manipulate it how you like. HTML <textarea id="test" maxlength="10" class="maxtext"></textarea>
var test = document.getElementById("test");
test.onpaste = function(e){
//do some IE browser checking for e
var max = test.getAttribute("maxlength");
e.clipboardData.getData('text/plain').slice(0, max);
};
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Updating a character limit count on my textarea
Date : March 29 2020, 07:55 AM
help you fix your problem So I've created my textarea here: , this is not a string, so this should fail: $(this + ' > .chars span')
$('.chars span', this.parentNode)
$(this).parent().find('.chars span')
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