看看这个 <html> <head> <title>TEST</title> <style> body,td{ font-family: verdana, arial, helvetica, sans-serif; font-size: 12px; } </style> <script type="text/javascript"> var start=0; var end=0; function add(){ var textBox = document.getElementById("ta"); var pre = textBox.value.substr(0, start); var post = textBox.value.substr(end); textBox.value = pre + document.getElementById("inputtext").value + post; } function savePos(textBox){ //如果是Firefox(1.5)的话,方法很简单 if(typeof(textBox.selectionStart) == "number"){ start = textBox.selectionStart; end = textBox.selectionEnd; } //下面是IE(6.0)的方法,麻烦得很,还要计算上'\n' else if(document.selection){ var range = document.selection.createRange(); if(range.parentElement().id == textBox.id){ // create a selection of the whole textarea var range_all = document.body.createTextRange(); range_all.moveToElementText(textBox); //两个range,一个是已经选择的text(range),一个是整个textarea(range_all) //range_all.compareEndPoints()比较两个端点,如果range_all比range更往左(further to the left),则 //返回小于0的值,则range_all往右移一点,直到两个range的start相同。 // calculate selection start point by moving beginning of range_all to beginning of range for (start=0; range_all.compareEndPoints("StartToStart", range) < 0; start++) range_all.moveStart('character', 1); // get number of line breaks from textarea start to selection start and add them to start // 计算一下\n for (var i = 0; i <= start; i ++){ if (textBox.value.charAt(i) == '\n') start++; } // create a selection of the whole textarea var range_all = document.body.createTextRange(); range_all.moveToElementText(textBox); // calculate selection end point by moving beginning of range_all to end of range for (end = 0; range_all.compareEndPoints('StartToEnd', range) < 0; end ++) range_all.moveStart('character', 1); // get number of line breaks from textarea start to selection end and add them to end for (var i = 0; i <= end; i ++){ if (textBox.value.charAt(i) == '\n') end ++; } } } document.getElementById("start").value = start; document.getElementById("end").value = end; } </script> </head> <body> <form action="a.cgi"> <table border="1" cellspacing="0" cellpadding="0"> <tr> <td>start: <input type="text" id="start" size="3"/></td> <td>end: <input type="text" id="end" size="3"/></td> </tr> <tr> <td colspan="2"> <textarea id="ta" onKeydown="savePos(this)" onKeyup="savePos(this)" onmousedown="savePos(this)" onmouseup="savePos(this)" onfocus="savePos(this)" rows="14" cols="50"></textarea> </td> </tr> <tr> <td><input type="text" id="inputtext" /></td> <td><input type="button" onClick="add()" value="Add Text"/></td> </tr> </table> </form> </body> </html>
<html> <head> <title>TEST</title> <style> body,td{ font-family: verdana, arial, helvetica, sans-serif; font-size: 12px; } <html> <head> <title>TEST</title> <style> body,td{ font-family: verdana, arial, helvetica, sans-serif; font-size: 12px; } </style> <script type="text/javascript"> var start=0; var end=0; function add(){ document.bb.aa.focus() var textBox = document.getElementById("ta"); var pre = textBox.value.substr(0, start); var post = textBox.value.substr(end); textBox.value = pre + document.getElementById("inputtext").value + post; } function savePos(textBox){ //如果是Firefox(1.5)的话,方法很简单 if(typeof(textBox.selectionStart) == "number"){ start = textBox.selectionStart; end = textBox.selectionEnd; } //下面是IE(6.0)的方法,麻烦得很,还要计算上'\n' else if(document.selection){ var range = document.selection.createRange(); if(range.parentElement().id == textBox.id){ // create a selection of the whole textarea var range_all = document.body.createTextRange(); range_all.moveToElementText(textBox); //两个range,一个是已经选择的text(range),一个是整个textarea(range_all) //range_all.compareEndPoints()比较两个端点,如果range_all比range更往左(further to the left),则 //返回小于0的值,则range_all往右移一点,直到两个range的start相同。 // calculate selection start point by moving beginning of range_all to beginning of range for (start=0; range_all.compareEndPoints("StartToStart", range) < 0; start++) range_all.moveStart('character', 1); // get number of line breaks from textarea start to selection start and add them to start // 计算一下\n for (var i = 0; i <= start; i ++){ if (textBox.value.charAt(i) == '\n') start++; } // create a selection of the whole textarea var range_all = document.body.createTextRange(); range_all.moveToElementText(textBox); // calculate selection end point by moving beginning of range_all to end of range for (end = 0; range_all.compareEndPoints('StartToEnd', range) < 0; end ++) range_all.moveStart('character', 1); // get number of line breaks from textarea start to selection end and add them to end for (var i = 0; i <= end; i ++){ if (textBox.value.charAt(i) == '\n') end ++; } } } document.getElementById("start").value = start; document.getElementById("end").value = end; } </script> </head> <body> <form action="a.cgi" name="bb"> <table border="1" cellspacing="0" cellpadding="0"> <tr> <td>start: <input type="text" id="start" size="3"/></td> <td>end: <input type="text" id="end" size="3"/></td> </tr> <tr> <td colspan="2"> <textarea id="ta" onKeydown="savePos(this)" onKeyup="savePos(this)" onmousedown="savePos(this)" onmouseup="savePos(this)" onfocus="savePos(this)" rows="14" cols="50" name="aa"></textarea> </td> </tr> <tr> <td><input type="text" id="inputtext" /></td> <td><input type="button" onClick="add()" value="Add Text"/></td> </tr> </table> </form> </body> </html> 搞定了..小改了一下就完全能用了^^结贴啦
应该insert('@12121#')
<html>
<head>
<title>TEST</title>
<style>
body,td{
font-family: verdana, arial, helvetica, sans-serif;
font-size: 12px;
}
</style>
<script type="text/javascript">
var start=0;
var end=0;
function add(){
var textBox = document.getElementById("ta");
var pre = textBox.value.substr(0, start);
var post = textBox.value.substr(end);
textBox.value = pre + document.getElementById("inputtext").value + post;
}
function savePos(textBox){
//如果是Firefox(1.5)的话,方法很简单
if(typeof(textBox.selectionStart) == "number"){
start = textBox.selectionStart;
end = textBox.selectionEnd;
}
//下面是IE(6.0)的方法,麻烦得很,还要计算上'\n'
else if(document.selection){
var range = document.selection.createRange();
if(range.parentElement().id == textBox.id){
// create a selection of the whole textarea
var range_all = document.body.createTextRange();
range_all.moveToElementText(textBox);
//两个range,一个是已经选择的text(range),一个是整个textarea(range_all)
//range_all.compareEndPoints()比较两个端点,如果range_all比range更往左(further to the left),则 //返回小于0的值,则range_all往右移一点,直到两个range的start相同。
// calculate selection start point by moving beginning of range_all to beginning of range
for (start=0; range_all.compareEndPoints("StartToStart", range) < 0; start++)
range_all.moveStart('character', 1);
// get number of line breaks from textarea start to selection start and add them to start
// 计算一下\n
for (var i = 0; i <= start; i ++){
if (textBox.value.charAt(i) == '\n')
start++;
}
// create a selection of the whole textarea
var range_all = document.body.createTextRange();
range_all.moveToElementText(textBox);
// calculate selection end point by moving beginning of range_all to end of range
for (end = 0; range_all.compareEndPoints('StartToEnd', range) < 0; end ++)
range_all.moveStart('character', 1);
// get number of line breaks from textarea start to selection end and add them to end
for (var i = 0; i <= end; i ++){
if (textBox.value.charAt(i) == '\n')
end ++;
}
}
}
document.getElementById("start").value = start;
document.getElementById("end").value = end;
}
</script>
</head>
<body>
<form action="a.cgi">
<table border="1" cellspacing="0" cellpadding="0">
<tr>
<td>start: <input type="text" id="start" size="3"/></td>
<td>end: <input type="text" id="end" size="3"/></td>
</tr>
<tr>
<td colspan="2">
<textarea id="ta" onKeydown="savePos(this)"
onKeyup="savePos(this)"
onmousedown="savePos(this)"
onmouseup="savePos(this)"
onfocus="savePos(this)"
rows="14" cols="50"></textarea>
</td>
</tr>
<tr>
<td><input type="text" id="inputtext" /></td>
<td><input type="button" onClick="add()" value="Add Text"/></td>
</tr>
</table>
</form>
</body>
</html>
<head>
<title>TEST</title>
<style>
body,td{
font-family: verdana, arial, helvetica, sans-serif;
font-size: 12px;
}
<html>
<head>
<title>TEST</title>
<style>
body,td{
font-family: verdana, arial, helvetica, sans-serif;
font-size: 12px;
}
</style>
<script type="text/javascript">
var start=0;
var end=0;
function add(){
document.bb.aa.focus()
var textBox = document.getElementById("ta");
var pre = textBox.value.substr(0, start);
var post = textBox.value.substr(end);
textBox.value = pre + document.getElementById("inputtext").value + post;
}
function savePos(textBox){
//如果是Firefox(1.5)的话,方法很简单
if(typeof(textBox.selectionStart) == "number"){
start = textBox.selectionStart;
end = textBox.selectionEnd;
}
//下面是IE(6.0)的方法,麻烦得很,还要计算上'\n'
else if(document.selection){
var range = document.selection.createRange();
if(range.parentElement().id == textBox.id){
// create a selection of the whole textarea
var range_all = document.body.createTextRange();
range_all.moveToElementText(textBox);
//两个range,一个是已经选择的text(range),一个是整个textarea(range_all)
//range_all.compareEndPoints()比较两个端点,如果range_all比range更往左(further to the left),则 //返回小于0的值,则range_all往右移一点,直到两个range的start相同。
// calculate selection start point by moving beginning of range_all to beginning of range
for (start=0; range_all.compareEndPoints("StartToStart", range) < 0; start++)
range_all.moveStart('character', 1);
// get number of line breaks from textarea start to selection start and add them to start
// 计算一下\n
for (var i = 0; i <= start; i ++){
if (textBox.value.charAt(i) == '\n')
start++;
}
// create a selection of the whole textarea
var range_all = document.body.createTextRange();
range_all.moveToElementText(textBox);
// calculate selection end point by moving beginning of range_all to end of range
for (end = 0; range_all.compareEndPoints('StartToEnd', range) < 0; end ++)
range_all.moveStart('character', 1);
// get number of line breaks from textarea start to selection end and add them to end
for (var i = 0; i <= end; i ++){
if (textBox.value.charAt(i) == '\n')
end ++;
}
}
}
document.getElementById("start").value = start;
document.getElementById("end").value = end;
}
</script>
</head>
<body>
<form action="a.cgi" name="bb">
<table border="1" cellspacing="0" cellpadding="0">
<tr>
<td>start: <input type="text" id="start" size="3"/></td>
<td>end: <input type="text" id="end" size="3"/></td>
</tr>
<tr>
<td colspan="2">
<textarea id="ta" onKeydown="savePos(this)"
onKeyup="savePos(this)"
onmousedown="savePos(this)"
onmouseup="savePos(this)"
onfocus="savePos(this)"
rows="14" cols="50" name="aa"></textarea>
</td>
</tr>
<tr>
<td><input type="text" id="inputtext" /></td>
<td><input type="button" onClick="add()" value="Add Text"/></td>
</tr>
</table>
</form>
</body>
</html>
搞定了..小改了一下就完全能用了^^结贴啦