Gostaria de saber se é possível, no Internet Explorer, escolher onde a seleção de determinada caixa de texto irá começar. Eu fiz uma pergunta parecida com essa e me responderam as funções "selectionStart" e "selectionEnd", mas essas SÓ funcionam no Firefox. Por esse motivo, venho aqui perguntar... É possível escolher em qual posição DENTRO de uma caixa de texto começará o cursor?
EX: Depois da primeira letra
Depois da quarta letra
E assim por diante....
Agradeço desde já
Caixa De Texto/cursor
Started By kuserun, 01/06/2009, 18:48
7 replies to this topic
#2
bimonti
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Posted 04/06/2009, 01:59
Sim, é possível mas meio trabalhoso. Veja esse exemplo que eu tinha nos confins do HD:
Enquanto o FF usa selectionStart e selectionEnd, o IE usa selection e selection.createRange ... tem umas coisas interessantes pela internet sobre essas funções, embora o exemplo acima seja bem funcional.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Extended functionaly for textelements</title>
<script type="text/javascript">
function insertAtCaret(obj, text) {
if(document.selection) {
obj.focus();
var orig = obj.value.replace(/\r\n/g, "\n");
var range = document.selection.createRange();
if(range.parentElement() != obj) {
return false;
}
range.text = text;
var actual = tmp = obj.value.replace(/\r\n/g, "\n");
for(var diff = 0; diff < orig.length; diff++) {
if(orig.charAt(diff) != actual.charAt(diff)) break;
}
for(var index = 0, start = 0;
tmp.match(text)
&& (tmp = tmp.replace(text, ""))
&& index <= diff;
index = start + text.length
) {
start = actual.indexOf(text, index);
}
} else if(obj.selectionStart) {
var start = obj.selectionStart;
var end = obj.selectionEnd;
obj.value = obj.value.substr(0, start)
+ text
+ obj.value.substr(end, obj.value.length);
}
if(start != null) {
setCaretTo(obj, start + text.length);
} else {
obj.value += text;
}
}
function setCaretTo(obj, pos) {
if(obj.createTextRange) {
var range = obj.createTextRange();
range.move('character', pos);
range.select();
} else if(obj.selectionStart) {
obj.focus();
obj.setSelectionRange(pos, pos);
}
}
</script>
</head>
<body>
<form name="form">
<input type="button" value="Insert text" onclick="insertAtCaret(this.form.text,
this.form.string.value)">
<input type="text" name="string"><br />
<textarea name="text" cols="60" rows="10"></textarea>
</form>
</body>
</html>Enquanto o FF usa selectionStart e selectionEnd, o IE usa selection e selection.createRange ... tem umas coisas interessantes pela internet sobre essas funções, embora o exemplo acima seja bem funcional.
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#3
RonsisM
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