dousui7410 2016-06-04 16:51
浏览 26

来自textarea的额外角色

I have two pages like this:

test.html

<!DOCTYPE html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
</head>

<body>
<form method="POST" action="test2.php">
    <textarea id="input" name="input" cols="100px" rows="15" wrap="soft" placeholder="put input here"></textarea>
    <button type="button" onclick="getLength()">Get length </button><p id="length"> </p></div>
    <br >
    <input type="submit">
</form>

<script>
function getLength(){
    var len=$('textarea').val().length;
    $('#length').text(len);
}
</script>
</body>
</html>

And test2.php

<?php
echo strlen($_POST['input']);
?>

When I enter some input eg: "aa[pressEnter]aa", It should echo 5 at test2.php page but it echoes 6 instead.

So why it is 6 (what is extra character) ?

thanks for reading!

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1条回答 默认 最新

  • drau89457 2016-06-04 17:30
    关注

    Return is counted as an extra character in chrome.

    Actually return is 2 escape characters . In chrome it takes one character (idk why), in edge it takes it as 2 characters so aa[enter]aa sums up to 6 characters

    EDIT: 2 parts are there, one is js fix for removal of return carriage and one is php fix

    js fix in html file

    <!DOCTYPE html>
<head>

</head>

<body>
<form method="POST" action="test2.php">
    <textarea id="input" name="input" cols="100px" rows="15" wrap="soft" placeholder="put input here"></textarea>
    <button type="button" onclick="getLength()">Get length </button><p id="length"> </p></div>
    <br >
    <input type="submit">
</form>

<script>
function getLength(){

    var fixedText = $('textarea').val();

    fixedText = fixedText.replace(/(
|
|)/gm, "");

    var len=fixedText.length;

    $('#length').text(len);
}
</script>
</body>
</html>

    php fix

    <?php

    $data = str_replace("
",'',$_POST['input']);
    echo strlen($data);

?>

    You just need to replace the return carriages , and with "".

    评论

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