Lab for string.replace() and string.search()

  
<HTML>
<HEAD>
<TITLE>Regular Expression Replace and Search</TITLE>
<SCRIPT LANGUAGE="JavaScript">
var mainString = "This is a test"
function doReplace(form) {
    var replaceStr = form.replaceEntry.value
    var delim = (form.caseSens.checked) ? "/g" : "/gi"
    var regexp = eval("/" + form.regexp.value + delim)
    form.result.value = mainString.replace(regexp, replaceStr)
}
function doSearch(form) {
    var replaceStr = form.replaceEntry.value
    var delim = (form.caseSens.checked) ? "/g" : "/gi"
    var regexp = eval("/" + form.regexp.value + delim)
    form.result.value = mainString.search(regexp)
}
</SCRIPT>
</HEAD>
<BODY>
<B>String Replace and Search with Regular Expressions</B>
<HR>
Text used for string.replace() and string.search() methods:<BR>
<B>This is a test.</B>
<FORM>
Enter a regular expression to match:
<INPUT TYPE="text" NAME="regexp" SIZE=25 VALUE="\B't">
<INPUT TYPE="checkbox" NAME="caseSens">Case-sensitive<BR>
Enter a string to replace the matching strings:
<INPUT TYPE="text" NAME="replaceEntry" SIZE=30 VALUE="it "><P>
<INPUT TYPE="button" VALUE="Execute replace()" onClick="doReplace(this.form)">
<INPUT TYPE="reset">
<INPUT TYPE="button" VALUE="Execute search()" onClick="doSearch(this.form)"><P>
Result:<BR>
<TEXTAREA NAME="result" COLS=60 ROWS=5 WRAP="virtual"></TEXTAREA>
</FORM>
</BODY>
</HTML>

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Lab for string.replace() and string.search() : String « Language Basics « JavaScript DHTML

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