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mail.prototype.testPress = function(event){
var str = document.getElementById("mailContent").innerText;
event = event || window.event;
if(event.keyCode == 13){
this.content = str + '</br>';
}else{
this.content = str;
}
}
var content = document.getElementById("mailContent").innerHTML;
var a = content.replace(/char(10)/,'</br>');
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD><TITLE>js 按键记录</TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="羽殇仁">
<META NAME="Keywords" CONTENT="js 按键记录">
<META NAME="Description" CONTENT="js 按键 记录">
</HEAD>
<BODY>
<script type="text/javascript">
var keystring = "";//记录按键的字符串
function $(s){return document.getElementById(s)?document.getElementById(s):s;}
function keypress(e)
{
var currKey=0,CapsLock=0,e=e||event;
currKey=e.keyCode||e.which||e.charCode;
CapsLock=currKey>=65&&currKey<=90;
switch(currKey)
{
//屏蔽了退格、制表、回车、空格、方向键、删除键
case 8: case 9:case 13:case 32:case 37:case 38:case 39:case 40:case 46:keyName = "";break;
default:keyName = String.fromCharCode(currKey); break;
}
keystring += keyName;
}
function keydown(e)
{
var e=e||event;
var currKey=e.keyCode||e.which||e.charCode;
if((currKey>7&&currKey<14)||(currKey>31&&currKey<47))
{
switch(currKey)
{
case 8: keyName = "[退格]"; break;
case 9: keyName = "[制表]"; break;
case 13:keyName = "[回车]"; break;
case 32:keyName = "[空格]"; break;
case 33:keyName = "[PageUp]"; break;
case 34:keyName = "[PageDown]"; break;
case 35:keyName = "[End]"; break;
case 36:keyName = "[Home]"; break;
case 37:keyName = "[方向键左]"; break;
case 38:keyName = "[方向键上]"; break;
case 39:keyName = "[方向键右]"; break;
case 40:keyName = "[方向键下]"; break;
case 46:keyName = "[删除]"; break;
default:keyName = ""; break;
}
keystring += keyName;
}
$("content").innerHTML=keystring;
}
function keyup(e)
{
$("content").innerHTML=keystring;
}
document.onkeypress=keypress;
document.onkeydown =keydown;
document.onkeyup =keyup;
</script>
<input type="text" />
<input type="button" value="清空记录" onclick="$('content').innerHTML = '';keystring = '';"/>
<br/>请按下任意键查看键盘响应键值:<span id="content"></span>
</BODY>
</HTML>
var content = document.getElementById('mailContent').value;
var str1 = content.replace(/\r\n/g,"</br>");
str1 = content.replace(/ /g," ");
alert(str1);
var content = document.getElementById('mailContent').value;
var str1 = content.replace(/\r\n/g,"</br>");
alert(str1);
var str2 = content.replace(/ /g," ");
alert(str2);
<textarea id="content" rows="5" cols="20"></textarea>
<input type="button" value="show" onclick="show()" />
<div id="div1">
</div>
<script type="text/javascript">
function show() {
var content = document.getElementById("content").value.replace(/\r\n/g, "<br/>").replace(/\n/g, "<br/>");
document.getElementById("div1").innerHTML = content;
}
</script>
var str = document.getElementById("mailContent").innerText;
str = str.replace("\r\n","<br/>");
str = str.replace(" "," ");
alert(str);