📄 实例171.textarea中字符串查询替换功能.html
字号:
<SCRIPT LANGUAGE="JavaScript">
<!--
var oRange;
var intCount = 0;
var intTotalCount = 0;
function fnSearch() {
var strBeReplaced;
var strReplace;
strBeReplaced = fm1.searchtext.value;
strReplace = fm1.replacetext.value;
fnNext();
fm1.content.focus();
oRange = fm1.content.createTextRange();
for (i=1; oRange.findText(strBeReplaced)!=false; i++) {
if(i==intCount){
oRange.select();
oRange.scrollIntoView();
break;
}
oRange.collapse(false);
}
}
function fnNext(){
if (intCount > 0 && intCount < intTotalCount){
intCount = intCount + 1;
}
else{
intCount = 1 ;
}
}
function init(){
var oRange ;
var strBeRepalced;
oRange = fm1.content.createTextRange();
strBeReplaced = fm1.searchtext.value;
for (i=0; oRange.findText(strBeReplaced)!=false; i++) {
oRange.collapse(false);
}
intTotalCount = i ;
}
function fnReplace(){
var strReplace;
strReplace = fm1.replacetext.value;
if(oRange!= null && typeof(oRange)=="object" && intTotalCount > 0){
oRange.text = strReplace;
intCount = intCount - 1;
intTotalCount = intTotalCount - 1;
oRange = null;
}
}
//-->
</SCRIPT>
<body onload="init()">
<form METHOD=POST name="fm1">
<table>
<tr>
<td>
<textarea NAME="content" ROWS="10" COLS="35">
欢迎大家学习javascript这门脚本语言!
欢迎大家学习javascript这门脚本语言!
欢迎大家学习javascript这门脚本语言!
欢迎大家学习javascript这门脚本语言!
欢迎大家学习javascript这门脚本语言!
</textarea></td><td valign=top>输入要查找的信息:<br>
<input name="searchtext" value="javascript"><br>
输入要替换的信息:<br>
<input name="replacetext" value="vbscript"><br>
<input type="button" value="查找" onclick="fnSearch()">
<input type="button" value="替换" onclick="fnReplace()"></td></tr></table>
</FORM>
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