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
javascript 关闭IE6、IE7
javascript substr和substring用法比较
javascript 强制弹出窗口代码-跨拦截
javascript 获取多条数据(模拟ajax获取数据)
js 分页代码带切换效果
选择指定数量后checkbox不可选(变灰)javascript代码
javascript 图片上传预览-兼容标准
jquery 截取字符串的实现
jquery tagname 取得方法
scrollTop 用法说明
javascript 倒排序方法
慎用 somefunction.prototype 分析
几个常用的JavaScript字符串处理函数 - split()、join()、substring()和indexOf()
javascript 根据歌名获取播放地址和歌词内容
js在Firefox与IE中对DOM对像的引用的比较
Javascript String对象扩展HTML编码和解码的方法
javascript HTMLEncode HTMLDecode的完整实例(兼容ie和火狐)
Javascript 获取字符串字节数的多种方法
javascript 常用方法总结
cookie丢失问题(认证失效) Authentication （用户验证信息）也会丢失

No. « 139 140 141 142 »

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: 285 ::
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);   //
 }
}

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