Tekst przekazany do window.prompt zostaje zastąpiony przez "..."

Question

Chcę umożliwić użytkownikom kopiowanie dużej liczby adresów e-mail do schowka. Ta odpowiedź wydawała się najbardziej niezawodny sposób, aby to zrobić:

How do I copy to the clipboard in JavaScript?

Jednak podczas badania stwierdziliśmy, że window.prompt()zawsze zastępuje część jednej z e-maili z ....

Oto dane testowe:

test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com; test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
test@test.com;test@test.com; 

Oto przykładowy kod z następującymi danymi testu:

window.prompt ("To copy emails to clipboard, press: Ctrl+C, then Enter", 
    "test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com; test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;test@test.com;test@test.com;test@test.com; 
    test@test.com;test@test.com;"); 

JSFiddle: http://jsfiddle.net/MkYDz/

Kliknij na link powyżej, skopiuj i wklej tekst do edytora tekstu, a zobaczysz, że jeden z e-maili (około połowy) staje się:

test@...om 

Dlaczego tak się dzieje?

Answer 1

Limit znaków dla wiersza wydaje się być powodem jak MVP powiedział. Jest to znacznie lepsze obejście tego problemu. Użyj numeru textarea z tekstem wiadomości e-mail jako jego treści i użyj funkcji select, aby zaznaczyć cały tekst w obszarze tekstowym, podobnie jak w przypadku monitu.

Przykład:

$('#container').append('To copy emails to clipboard, press: Ctrl+C, then Enter <br /> 
<textarea id="emailsToCopy">'+emailsToCopy+'</textarea>'); 
$('#emailsToCopy').select().focus(); 

Zakładając, należy użyć jQuery. Jeśli nie, możesz użyć funkcji select w elemencie textarea DOM.

var emailsTxtArea = document.getElementById(emailsToCopy); 
emailsTxtArea.select(); 
emailsTxtArea.focus(); 

Answer 2

Funkcja window.prompt() jest ograniczona do 2000 znaków w Chromium. Jeśli ciąg wejściowy przekroczy ten limit (twój przykład ma 2059 znaków), ciąg wejściowy jest wycinany w środku zaznaczonym kropkami. Nazywa się to ellipsis.

Oto demonstracja użyciem dokładnie 2000 znaków (Wymieniłem trzy ostatnie znaki z XXX): http://jsfiddle.net/MkYDz/2/

;test@tesXXX"); 

Answer 3

Gdybym miał więcej punktów reputacji by wypowiedzieć się na temat odpowiedzi Jitesh za ...

Jeśli nie używasz jQuery, nie można tego zrobić:

emailsTxtArea.select().focus(); 

Zamiast tego musisz to zrobić:

emailsTxtArea.select(); 
emailsTxtArea.focus(); 

W zwykłym javascript, metoda select nie zwraca obiektu.