当前位置: 首页 > 图文教程 > 网络编程 > Javascript > 实现textarea内字符串选择查询替换功能

Javascript
jquery中常用的SET和GET
解javascript 混淆加密收藏
JavaScript 在线压缩和格式化收藏
JavaScript URL参数读取改进版
javascript打开新窗口同时关闭旧窗口
借用Google的Javascript API Loader来加速你的网站
javascript Xml增删改查(IE下)操作实现代码
js操作Xml(向服务器发送Xml,处理服务器返回的Xml)(IE下有效)
最近项目写了一些js，水平有待提高
JavaScript库 开发规则
JavaScript入门教程(1) 什么是JS
JavaScript入门教程(2) JS基础知识
JavaScript入门教程(3) js面向对象
JavaScript入门教程(4) js浏览器对象
JavaScript入门教程(5) js Screen屏幕对象
JavaScript入门教程(7) History历史对象
JavaScript入门教程(8) Location地址对象
JavaScript入门教程(9) Document文档对象
JavaScript入门教程(11) js事件处理
JavaScript入门教程(12) js对象化编程

No. « 124 125 126 127 »

技术文章搜索

关键字

Javascript 中的 实现textarea内字符串选择查询替换功能

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-11-03   浏览: 294 ::
收藏到网摘: n/a

 

----------自动替换版----------


<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<SCRIPT LANGUAGE="JavaScript">
var staus ;
var oRange;
var objTimer;
var objTimer1;
var objTimer2;
var sBookMark;
<!--
function selectall(objAll,OBJSingle){
alert(objAll.checked);
for (var i=0;i<OBJSingle.length;i++){
if (objAll.checked){
for( objs in OBJSingle){
alert(objs.value);
objs.checked=true;
}
}
else{
OBJSingle.checked=false;
}
}
}

function fnSearch() {
fm1.txtarea1.focus();
oRange = fm1.txtarea1.createTextRange();
searchtxt(1);
}

function searchtxt(n){
var v1;
var v2;
var txtr;
var blnS;

window.clearInterval(objTimer1);
window.clearInterval(objTimer2);

v1 = fm1.txtarea1.value;
v2 = fm1.txtarea2.value;
v3 = fm1.txtarea3.value;

if( n == 1) {
if (oRange != null) {
oRange.findText(v2);
if  (oRange.findText(v2) == true){
//sBookMark = oRange.getBookmark();
oRange.select();
oRange.scrollIntoView();
objTimer2 = window.setInterval("searchtxt(2)",1000);
}
else{
objTimer = window.setInterval("searchtxt(3)",1000);
}
}
staus = 2 ;
}
else if(n==2)  {
oRange.text = v3;
staus = 1;
objTimer1 = window.setInterval("searchtxt(1)",1000);
}
else if(n==3) {
staus = 3 ;
window.clearInterval(objTimer);
window.clearInterval(objTimer1);
window.clearInterval(objTimer2);
}
}
//-->
</SCRIPT>
</HEAD>
<BODY>
<FORM METHOD=POST name="fm1">
<TEXTAREA NAME="txtarea1" ROWS="20" COLS="50">
this is the original text, and this is the string will be repalced.
this is the original text, and this is the string will be repalced.
this is the original text, and this is the string will be repalced.
this is the original text, and this is the string will be repalced.
this is the original text, and this is the string will be repalced.
this is the original text, and this is the string will be repalced.
</TEXTAREA>
<TEXTAREA NAME="txtarea2" ROWS="20" COLS="50"> will be </TEXTAREA>
<TEXTAREA NAME="txtarea3" ROWS="20" COLS="50"> has been </TEXTAREA>
<input type="button" value="search" onclick="fnSearch()">
</FORM>

</BODY>
</HTML>

--------------------------------手动改进版----------------------------------------

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<SCRIPT LANGUAGE="JavaScript">
var oRange;     // save the current textrange 
var intCount = 0;   // this pos of current textrange in the total count
var intTotalCount = 0;  // total count
<!--
//==============================================
//function : fnSearch()
//comment  : Search the text
//param    : none
//return   : none
//author   : Fantiny
//Date     : 10/21/2005
//==============================================
function fnSearch() {

 var strBeReplaced;
 var strReplace;

 strBeReplaced = fm1.txtarea2.value;
 strReplace = fm1.txtarea3.value;

 fnNext();

 fm1.txtarea1.focus();
 oRange = fm1.txtarea1.createTextRange(); //Create a textRange for the Textarea

 
 // Find the text by findtext method
 for (i=1; oRange.findText(strBeReplaced)!=false; i++) {
  if(i==intCount){  
   oRange.select();   // select the finded text
   oRange.scrollIntoView(); // scroll the page and set the text Into View
   break;
  }
  oRange.collapse(false);   //
 }
}

//========================================