IE下可用
L@_@K<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="Gao YiXiang" />
<meta name="email" content="[email protected]" />
<meta name="keywords" content="javascript dhtml dom" />
<meta name="description" content="I love web development." />
</head>
<body>
<textarea id="" rows="" cols="">Please select me</textarea>
<input type="button" id="btnBold" value="B" />
<script type="text/javascript">
<!--
btnBold.onclick = function()
{
var range = document.selection.createRange();
range.text = "" + range.text + "";
};
//-->
</script>
</body>
</html>
L@_@K<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="Gao YiXiang" />
<meta name="email" content="[email protected]" />
<meta name="keywords" content="javascript dhtml dom" />
<meta name="description" content="I love web development." />
</head>
<body>
<textarea id="" rows="" cols="">Please select me</textarea>
<input type="button" id="btnBold" value="B" />
<script type="text/javascript">
<!--
btnBold.onclick = function()
{
var range = document.selection.createRange();
range.text = "" + range.text + "";
};
//-->
</script>
</body>
</html>
L@_@K
DHTML参考手册
if(_obj1.createTextRange)
_obj1.caretPos = document.selection.createRange().duplicate();
}function insertAtCaret() {
var _obj1 = document.getElementById("textarea1");
var _text = "[b]";
_obj1.focus();
storeCaret(_obj1);
if(_obj1.createTextRange && _obj1.caretPos){
var caretPos = _obj1.caretPos;
caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ?_text + ' ' : _text;
}else _obj1.value = _text;
}
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="Gao YiXiang" />
<meta name="email" content="[email protected]" />
<meta name="keywords" content="javascript dhtml dom" />
<meta name="description" content="I love web development." />
</head>
<body>
<textarea id="aaa" rows=10 cols=100>Please select me</textarea>
<input type="button" id="btnBold" value="B" />
<script type="text/javascript">
<!--
btnBold.onclick = function()
{
var range = document.selection.createRange();
range.select();
if (document.activeElement.id != "aaa") return;
range.text = "" + range.text + "";
range.select();
};
//-->
</script>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title> new document </title>
<meta name="generator" content="editplus" />
<meta name="author" content="Gao YiXiang" />
<meta name="email" content="[email protected]" />
<meta name="keywords" content="javascript dhtml dom" />
<meta name="description" content="I love web development." />
</head>
<body>
<textarea id="aaa" rows=10 cols=100>Please select me</textarea>
<input type="button" id="btnBold" value="B" />
<script type="text/javascript">
<!--
btnBold.onclick = function()
{
var range = document.selection.createRange();
range.select();
if (document.activeElement.id != "aaa") return;
range.text = "" + range.text + "";
range.select();
};
//-->
</script>
</body>
</html>