实现textarea内字符串选择查询替换功能代码,JS代码库,德仔网

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【JS】实现textarea内字符串选择查询替换功能
作者:李敬塔 / 发布于2012/12/5/ 699
<!--
-- cateDate: 2009-06-13
--author:李敬塔 
-->

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- saved from url=(0076)http://www.why100000.com/%5Flab/docs/js_code/textarea_search_replace/man.htm -->
<HTML><HEAD><TITLE>New Document</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2900.2180" name=GENERATOR></HEAD>
<BODY 
onload=init()><BR>实现textarea内字符串选择查询替换功能<BR>--------------------------------手动替换----------------------------------------

<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);   //
 }
}

//==============================================
//function : fnSearch()
//comment  : set the flag to the next textrange
//param    : none
//return   : none
//author   : Fantiny
//Date     : 10/21/2005
//==============================================
function fnNext(){

 if (intCount > 0 && intCount < intTotalCount){
  intCount = intCount + 1;
 }
 else{
  intCount = 1 ;
 }
}

//==============================================
//function : init()
//comment  : initialize at page onload to get the count
//param    : none
//return   : none
//author   : Fantiny
//Date     : 10/21/2005
//==============================================
function init(){

 var oRange ;
 var strBeRepalced;

 oRange = fm1.txtarea1.createTextRange();  //Create a textRange for the Textarea
 strBeReplaced = fm1.txtarea2.value;

 for (i=0; oRange.findText(strBeReplaced)!=false; i++) {
     oRange.collapse(false);  // Moves the insertion point to the end of the text range.
 }

 intTotalCount = i ;

}

//==============================================
//function : fnReplace()
//comment  : replace the text of the selected textrange
//param    : none
//return   : none
//author   : Fantiny
//Date     : 10/21/2005
//==============================================
function fnReplace(){

 var strReplace;

 strReplace = fm1.txtarea3.value;

 // if the textrange is exist, replace the text
 if(oRange!= null && typeof(oRange)=="object" && intTotalCount > 0){
  oRange.text = strReplace;
  intCount = intCount - 1;
  intTotalCount = intTotalCount - 1;
  oRange = null;
 }
}
//-->
</SCRIPT>

<FORM name=fm1 method=post><TEXTAREA name=txtarea1 rows=14 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=14 cols=30> will be </TEXTAREA> <TEXTAREA name=txtarea3 rows=14 cols=50> has been </TEXTAREA> <INPUT onclick=fnSearch() type=button value=search> <INPUT onclick=fnReplace() type=button value=Replace> </FORM></BODY></HTML>

 

上面的的手动替换啦，要不来个自动的?

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<!-- saved from url=(0076)http://www.why100000.com/%5Flab/docs/js_code/textarea_search_replace/man.htm -->
<HTML><HEAD><TITLE>New Document</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2900.2180" name=GENERATOR></HEAD>
<BODY 
onload=init()><BR>实现textarea内字符串选择查询替换功能<BR>--------------------------------手动替换----------------------------------------

<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);   //
 }
}

//==============================================
//function : fnSearch()
//comment  : set the flag to the next textrange
//param    : none
//return   : none
//author   : Fantiny
//Date     : 10/21/2005
//==============================================
function fnNext(){

 if (intCount > 0 && intCount < intTotalCount){
  intCount = intCount + 1;
 }
 else{
  intCount = 1 ;
 }
}

//==============================================
//function : init()
//comment  : initialize at page onload to get the count
//param    : none
//return   : none
//author   : Fantiny
//Date     : 10/21/2005
//==============================================
function init(){

 var oRange ;
 var strBeRepalced;

 oRange = fm1.txtarea1.createTextRange();  //Create a textRange for the Textarea
 strBeReplaced = fm1.txtarea2.value;

 for (i=0; oRange.findText(strBeReplaced)!=false; i++) {
     oRange.collapse(false);  // Moves the insertion point to the end of the text range.
 }

 intTotalCount = i ;

}

//==============================================
//function : fnReplace()
//comment  : replace the text of the selected textrange
//param    : none
//return   : none
//author   : Fantiny
//Date     : 10/21/2005
//==============================================
function fnReplace(){

 var strReplace;

 strReplace = fm1.txtarea3.value;

 // if the textrange is exist, replace the text
 if(oRange!= null && typeof(oRange)=="object" && intTotalCount > 0){
  oRange.text = strReplace;
  intCount = intCount - 1;
  intTotalCount = intTotalCount - 1;
  oRange = null;
 }
}
//-->
</SCRIPT>

<FORM name=fm1 method=post><TEXTAREA name=txtarea1 rows=14 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=14 cols=30> will be </TEXTAREA> <TEXTAREA name=txtarea3 rows=14 cols=50> has been </TEXTAREA> <INPUT onclick=fnSearch() type=button value=search> <INPUT onclick=fnReplace() type=button value=Replace> </FORM></BODY></HTML>
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