collapse([bStart])
移动Range的插入点
bStart true(移到开头) false(移到末尾)
findText(sText [, iSearchScope] [, iFlags])
在Range中查找sText
iSearchScope 开始位置，负数方向搜索
iFlags 2(整词匹配) 4(区别大小写)
moveStart(sUnit [, iCount])
moveEnd(sUnit [, iCount])
移动Range的开头或结尾
sUnit character(字) word(词) sentence(句) textedit(Range)
iCount 移动数量，默认为1
moveToPoint(iX, iY)
移动光标到坐标(iX,iY)
pasteHTML(sHTMLText)
替换Range中的html
scrollIntoView([bAlignToTop])
滚动使之在当前窗口显示
bAlignToTop true(Range在窗口开头) false(Range在窗口底部)
select()
选中Range
然后讲一些例子，大家也可以帮忙汇总一下，找帖子不好找，呵呵
设置光标(qiushuiwuhen)
====================================
<textarea id=demo cols=50 rows=5>关于光标定位的补充.abcdefghijklmnopqrstuvwxyz</textarea>
<br><input type=checkbox id=collapse>倒数 第<input id=s value=4 size=4>位 <input value="设置光标" type=button onclick=setCursor()>
<script>
function setCursor(){
var num=parseInt(document.all.s.value)
range=document.all.demo.createTextRange();
if(document.all.collapse.checked){
range.collapse(false);
range.moveEnd('character',-1*num);
}else{
range.collapse(true);
range.moveStart('character',-1+num);
}
range.select();
}
</script>
=====================================
设置文本选择(qiushuiwuhen)
==========================================
<div id=demo>关于光标定位的补充.abcdefghijklmnopqrstuvwxyz</div>
<br>从正数<input id=b value=4 size=4> 到 倒数第<input id=s value=4 size=4>位 <input value="设置文本选择" type=button onclick=setSelect()>
<script>
function setSelect(){var range = document.body.createTextRange();
range.moveToElementText(demo)
range.moveEnd('character',-1*parseInt(document.all.s.value));
range.moveStart('character',-1+parseInt(document.all.b.value));
range.select();
}
</script>
================================================================
取得当前坐标系列1(qiushuiwuhen)
=====================================
<textarea id=show rows=10 cols=100>
先将光标置在这里任意处，然后点击按钮，看光标变化
</textarea>
<br><input type=button value=取得当前坐标 onclick='window.status=GetCursorPos()'>
<script>
function GetCursorPos(oTextArea)
{
s="~!@#$%^";
clipboardData.setData('text',s);
show.focus();
document.execCommand('paste');
var arr=show.value.split(s);
show.value=arr[1];
show.document.selection.empty();
show.document.selection.createRange().select();
show.focus();
clipboardData.setData('text',arr[0]);
document.execCommand('paste');
return arr[0].length;
}
</script>
========================================
取得当前坐标系列2(色眯眯的小疯狗)
===============================
<textarea rows=10 cols=100 onclick="getCursorPosition()">
北京时间10月6日，世界三大通讯社之一的法新社刊发图文报道，中国国脚孙继海因为在最近的世界杯预选赛中的表现，已经吸引了意大利俱乐部AC米兰和都灵队的争购。中国队只需在10月7日同阿曼队的比赛中战平就将首次进入世界杯决赛圈。图为孙继海(右)1998年12月19日在亚洲杯上的资料图片。</textarea>
<script language=JScript>
function getCursorPosition(){
var src = event.srcElement
var oTR = src.createTextRange()
var textLength = src.innerText.length
var line, char, total, cl
oTR.moveToPoint(window.event.x, window.event.y)
oTR.moveStart("character", -1*textLength)
cl = oTR.getClientRects()
line = cl.length
total = oTR.text.length
oTR.moveToPoint(cl[cl.length-1].left-2, cl[cl.length-1].top-2)
oTR.moveStart("character", -1*textLength)
char = total - oTR.text.length
window.status = "行: " + line +", 列: " + char + ", 第 " + total + " 个字符"
}
</SCRIPT>
=================================
取得当前坐标系列3(Yang)
================================
<textarea rows=20 cols=80 id=show>
Alpha 滤镜 : 线形 <img src=images/ad.gif style='filter: Alpha(opacity=100,finishopacity=0,style=1,startx=0,starty=0,finishx=468,finishy=60)'><br>
Alpha 滤镜 :放射状<img src=images/ad.gif style='filter: Alpha(opacity=100,finishopacity=0,style=2,startx=0,starty=0,finishx=468,finishy=60)'><br>
Alpha 滤镜 :长方形<img src=images/ad.gif style='filter: Alpha(opacity=100,finishopacity=0,style=3,startx=0,starty=0,finishx=468,finishy=60)'><br>
<img src=images/ad.gif style='filter:blur(add=ture,direction=135,strength=100)'><br>
<img src=images/ad.gif style='filter:filph'><br>
<img src=images/ad.gif style='filter:filpv'><br>
<img src=images/ad.gif style='filter:chroma(color=white)'><br>
<p style='filter:Dropshadow(color=#ff0080,offx=5,offy=5.positive=0)'>样式表滤镜实例</p><br>
<img src=images/ad.gif style='filter:glow(color=blue,strength=10)'><br>
<img src=images/ad.gif style='filter:gray'><br>
<img src=images/ad.gif style='filter:invert'><br>
<img src=images/ad.gif style='filter:xray'><br>
<img src=images/ad.gif style='filter:light'><br>
<img src=images/ad.gif style='filter:mask(color=white)'><br>
<img src=images/ad.gif style='filter:shadow(color=red,direction=225)'><br>
<img src=images/ad.gif style='filter:wave(add=add,freq=2,lightstrength=50,phase=45,strength=10)'><br>
<img src=images/ad.gif style='filter:wave(add=add,freq=2,lightstrength=30,phase=50,strength=5)'><br>
<img src=images/ad.gif style='filter:wave(add=add,freq=2,lightstrength=90,phase=25,strength=5)'><br>
<img src=images/ad.gif style=''><br>
</textarea>
<input type=button value=运行代码 onclick=window.open().document.writeln(show.value)>
<input type=button value=取得当前坐标 onclick='window.status=GetCursorPos(show)'>
<script>
function GetCursorPos(oTextArea)
{
s="~!@#$%^";
clipboardData.setData('text',s);
oTextArea.focus();
document.execCommand('paste');
var ret=oTextArea.value.indexOf(s);
document.execCommand('undo');
return ret;
}
</script>
=================================
取得当前坐标系列4(qiushuiwuhen)
====================================
<textarea id=demo cols=50>
中文abcdefghijklmnopqrstuvwxyz
</textarea>
<br><input type=button onclick=get(demo) value=get>
<script>
function get(oTextarea){
var qswh="@#%#^&#*$"
oTextarea.focus();
rng=document.selection.createRange();
rng.text=qswh;
var tmp=oTextarea.value.indexOf(qswh)
rng.moveStart("character", -qswh.length)
rng.text="";
alert(tmp);
}
</script>
=========================================
取得当前坐标系列5(色眯眯的小疯狗)
===========================================
<textarea rows=10 cols=100 onclick="getCursorPosition()" onkeyup="getCursorPosition()">
北京时间10月6日，世界三大通讯社之一的法新社刊发图文报道，中国国脚孙继海因为在最近的世界杯预选赛中的表现，已经吸引了意大利俱乐部AC米兰和都灵队的争购。中国队只需在10月7日同阿曼队的比赛中战平就将首次进入世界杯决赛圈。图为孙继海(右)1998年12月19日在亚洲杯上的资料图片。</textarea>
<script language=JScript>
function getCursorPosition(){
var src = event.srcElement
var oTR = src.createTextRange()
var oSel = document.selection.createRange()
var textLength = src.innerText.length
var line, char, total, cl
oTR.moveToPoint(oSel.offsetLeft, oSel.offsetTop)
oTR.moveStart("character", -1*textLength)
cl = oTR.getClientRects()
line = cl.length
total = oTR.text.length
oTR.moveToPoint(cl[cl.length-1].left, cl[cl.length-1].top)
oTR.moveStart("character", -1*textLength)
char = total - oTR.text.length
if (oSel.offsetTop != cl[cl.length-1].top) {line++; char = 0}
else if (src.createTextRange().text.substr(oTR.text.length, 2) == "\r\n") char -= 2
window.status = "行: " + line +", 列: " + char + ", 第 " + total + " 个字符"
}
</SCRIPT>
=========================================
取得当前坐标系列6(qiushuiwuhen)
============================
<textarea id=demo cols=50>
中文abcdefghijklmnopqrstuvwxyz</textarea>
<br><input type=button value=getPos onclick=getPos(demo)>
<script>
function getPos(obj){
obj.focus();ml=obj.value.length;l=0;
rng=document.selection.createRange();
rng.moveEnd("character",ml);
try{l=ml-rng.htmlText.match(/>((.|\n)+)<\/textarea>/i)[1].length}catch(e){}
alert(l)
}
</script>
==============================
获取光标位置系列7(flashsoft)
==================================
<body><div id=box>点击textarea</div>
<script>
function doit(){
var rng = event.srcElement.createTextRange();
rng.moveToPoint(event.x,event.y);
rng.moveEnd("character",event.srcElement.value.length)
box.innerText = "光标位置：" + (event.srcElement.value.length - rng.text.length)
}
</script><textarea onclick=doit() rows="6" cols="33">sdfsdfsdfsdfsdfsdfsdf</textarea></body>
获取光标位置系列8(flashsoft）
================================
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>光标位置</title>
<style>
INPUT{border: 1 solid #000000}
BODY,TABLE{font-size: 10pt}
</style>
</head>
<body>
<table border="0" width="700" cellspacing="0" cellpadding="0">
<tr>
<td width="479" rowspan="7">
点击 TextArea 实现光标定位
<p>
<textarea rows="7" cols="49" id="box" onclick=tellPoint()>我怕来不及我要抱着你，直到感觉你的绉纹有了岁月的痕迹，直到视线变得模糊直到不能呼吸
为了你我愿意
动也不能动也要看着你，直到感觉你的发线有了白雪的痕迹，直到肯定你是真的直到失去力气让我们形影不离
如果全世界我也可以放弃，至少还有你值得我去珍惜而你在这里就是生命的奇迹
也许全世界我也可以忘记，就是不愿意失去你的消息你掌心的痣我总记得在哪里
我们好不容易我们身不由已，我怕时间太快不够将你看仔细，我怕时间太慢日夜担心失去你恨不得一夜之间白头永不分离
</textarea>
<script>
function movePoint()
{
var pn = parseInt(pnum.value);
if(isNaN(pn))
return;
var rng = box.createTextRange();
rng.moveStart("character",pn);
rng.collapse(true);
rng.select();
returnCase(rng)
}
function tellPoint()
{
var rng = event.srcElement.createTextRange();
rng.moveToPoint(event.x,event.y);
rng.moveStart("character",-event.srcElement.value.length)
pnum.value = rng.text.length
returnCase(rng)
}
function returnCase(rng)
{
bh.innerText = rng.boundingHeight;
bl.innerText = rng.boundingLeft;
bt.innerText = rng.boundingTop;
bw.innerText = rng.boundingWidth;
ot.innerText = rng.offsetTop;
ol.innerText = rng.offsetLeft;
t.innerText = rng.text;
}
function selectText(sp,ep)
{
sp = parseInt(sp)
ep = parseInt(ep)
if(isNaN(sp)||isNaN(ep))
return;
var rng = box.createTextRange();
rng.moveEnd("character",-box.value.length)
rng.moveStart("character",-box.value.length)
rng.collapse(true);
rng.moveEnd("character",ep)
rng.moveStart("character",sp)
rng.select();
returnCase(rng);
}
var rg = box.createTextRange();
function findText(tw)
{
if(tw=="")
return;
var sw = 0;
if(document.selection)
{
sw = document.selection.createRange().text.length;
}
rg.moveEnd("character",box.value.length);
rg.moveStart("character",sw);
if(rg.findText(tw))
{
rg.select();
returnCase(rg);
}
if(rg.text!=tw)
{
alert("已经搜索完了")
rg = box.createTextRange()
}
}
</script>
</p>
<p></p>
光标位置：<input type="text" value="0" id="pnum" size="8"> <input type="button" onclick="movePoint()" value="移动光标到指定位置">
<p></p>
选择指定范围：<input type="text" size="9" id="sbox"> -- <input type="text" size="9" id="ebox"> <input type="button" onclick="selectText(sbox.value,ebox.value)" value="选择">
<p></p>
选择查找字符 ：<input type="text" value="" id="cbox" size="8"> <input type="button" onclick="findText(cbox.value)" value="查找下一个并选择">
</td>
<td width="217">boundingHeight: <span id="bh"></span></td>
</tr>
<tr>
<td width="217">boundingWidth: <span id="bw"></span></td>
</tr>
<tr>
<td width="217">boundingTop: <span id="bt"></span></td>
</tr>
<tr>
<td width="217">boundingLeft: <span id="bl"></span></td>
</tr>
<tr>
<td width="217">offsetLeft: <span id="ol"></span> </td>
</tr>
<tr>
<td width="217">offsetTop: <span id="ot"></span> </td>
</tr>
<tr>
<td width="217">text: <span style="position: absolute; z-index: 10" id="t"></span> </td>
</tr>
</table>
</body>
</html>
=================================
今天又看到一种
=========================================
<textarea id=demo cols=50>
中文abcdefghijklmnopqrstuvwxyz</textarea>
<br><input type=button value=getPos onclick=getPos(demo)>
<script>
function getPos(obj){
obj.focus();
var workRange=document.selection.createRange();
obj.select();
var allRange=document.selection.createRange();
workRange.setEndPoint("StartToStart",allRange);
var len=workRange.text.length;
workRange.collapse(false);
workRange.select();
alert(len);
}
</script>
