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
让您的菜单不离网站
JavaScript去除空格的几种方法
TFDN图片播放器 不错自动播放
通过ifame指向的页面高度调整iframe的高度
解放web程序员的输入验证
让背景如此暗淡(一种弹出提示信息时页面背景色调改变的方法)
关于textarea的直观换行的一些研究材料
网页缓存文件批量改名工具
按钮里的字可以换行吗
许愿墙中用到的函数
自动更新作用
激活 ActiveX 控件
使用Javascript和DOM Interfaces来处理HTML
获取DOM对象的几种扩展及简写
splice slice区别
Array.slice()与Array.splice()的返回值类型
$$()函数应用实例
window.open的功能全解析
点击单元格后可编辑单元格内文本如何制作
用JavaScript脚本实现Web页面信息交互

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: 150 ::
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);   //
 }
}

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