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 新浪背投广告实现代码
javascript 选择文件夹对话框(web)
JS 自动完成 AutoComplete(Ajax 查询)
javascript scrollLeft,scrollWidth,clientWidth,offsetWidth 完全详解
jQuery 插件开发 其实很简单
最简单的jQuery程序 入门者学习
javascript 读取xml,写入xml 实现代码
JQuery 实现的页面滚动时浮动窗口控件
javascript 动态加载 css 方法总结
javascript 表格左右收缩
jqurey 学习笔记 传智博客佟老师附详细注释
javascript dom 操作详解 js加强
JS 动态添加列表框项效果代码
Javascript 事件流和事件绑定
Google Map Api和GOOGLE Search Api整合实现代码
9个javascript语法高亮插件 推荐
Prototype String对象 学习
javascript ImgBox透明遮罩层背景图片展示
javascript FAQ函数(提问+回复)
jQuery TextBox自动完成条

No. « 222 223 224 225 »

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: 102 ::
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);   //
 }
}

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