JavaScript/RegExTester_JavaScript/index.html at master · littleflute/JavaScript · GitHub

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<HTML>
<HEAD>
<TITLE>Regular Expression Test Page</TITLE>

<!--- Some styles to make the page look nice --->
<STYLE>
BODY {font-family:arial;font-size:12px}
INPUT {font-size:11px}
TEXTAREA {font-size:11px}
TH {background:#8888FF;color:white;text-align:left}
TD {background:#CCCC99;color:black;font-size:12px}
TD.RowA {background:#CCCC99}
TD.RowB {background:#EEEEBB}
 .header {font-weight:bold}
</STYLE>

<SCRIPTLANGUAGE="JavaScript">
// Turn off fields used only by replace
functionhideReplaceFields(){
document.getElementById('RegExReplace').disabled=true;
document.getElementById('replaceheader').disabled=true;
}

// Turn on fields used only by replace
functionshowReplaceFields(){
document.getElementById('RegExReplace').disabled=false;
document.getElementById('replaceheader').disabled=false;
}

// Perform a find
functionprocessRegexFind(text,regex,flags){
varreg=newRegExp(regex,flags);
varlastIdx=-1;
variCount=0;
varresult="";
varoutput='<DIV STYLE="height:200px;overflow-y:auto;width:550">'+
'<TABLE BORDER="0" CELLPADDING="2" CELLSPACING="0" WIDTH="550">'+
'<TR><TH WIDTH="*">Match</TH><TH WIDTH="50">Position</TH><TH WIDTH="50">Length</TH></TR>';

// Loop as long as have matches
while(lastIdx!=0)
{
// Do it
varmtch=reg.exec(text);

// Check if got one
if(reg.lastIndex!=0)
{
// Yep, increment counter
iCount++;

if(iCount%2)
style="RowA";
else
style="RowB";
// Write output
output+='<TR CLASS="'+style+'"><TD>'+
RegExp.lastMatch+"</TD><TD>"+
(reg.lastIndex-RegExp.lastMatch.length)+"</TD><TD>"+
RegExp.lastMatch.length+"</TD></TR>";
}

lastIdx=reg.lastIndex;
}

output+="</TABLE>";

// Build result
if(iCount!=0)
result="Matches Found: "+iCount+"<BR>"+output;
else
result="No matches";

returnresult;
}

// Process a replace
functionprocessRegexReplace(text,regexfind,regexreplace,flags){
// Define regex
varre=newRegExp(regexfind,flags);
// Do it
varnewstr=text.replace(re,regexreplace);
// Generate output
varresult='<DIV STYLE="height:200px;overflow-y:auto;width:550">'+
'<TABLE BORDER="0" CELLPADDING="2" CELLSPACING="0" WIDTH="550">'+
'<TR><TH>New Text</TH></TR><TR><TD>'+
newstr+'</TD></TR>';

returnresult;
}

// Process entry point
functionprocessRegex(form){
varoutput="";
varflags;
if(form.CaseSensitive.checked)
flags="g";
else
flags="gi";

// What to do?
if(form.OperationFind.checked){
output=processRegexFind(form.SearchText.value,form.RegEx.value,flags);
}
elseif(form.OperationReplace.checked){
output=processRegexReplace(form.SearchText.value,form.RegEx.value,form.RegExReplace.value,flags);
}

document.getElementById('output').innerHTML=output;

returnfalse;
}
</SCRIPT>
</HEAD>

<BODY>

<FORMNAME="tester" ACTION="" METHOD="post" onSubmit="processRegex(this);return false">

<TABLEBORDER="1" CELLPADDING="4" CELLSPACING="0" WIDTH="550">
<TR>
<THCLASS="Dialog">Regular Expression Tester</TH>
</TR>
<TR>
<TDCLASS="Dialog">

<!--- Text input for the regular expression itself --->
<SPANCLASS="header">Enter a regular expression:</SPAN><BR>
<INPUTNAME="RegEx" TYPE="Text" SIZE="65" STYLE="font-size:13px">

<!--- Checkbox to control case-sensitivity --->
<INPUTTYPE="Checkbox" NAME="CaseSensitive" ID="CaseSensitive" VALUE="Yes">
<LABELFOR="CaseSensitive">Case sensitive</LABEL>
<BR>

<!--- Radio buttons to display find vs. replace --->
<INPUTTYPE="Radio" NAME="Operation" ID="OperationFind" VALUE="find" CHECKEDonClick="hideReplaceFields()">
<LABELFOR="OperationFind">Find</LABEL>
<INPUTTYPE="Radio" NAME="Operation" ID="OperationReplace" VALUE="replace" onClick="showReplaceFields()">
<LABELFOR="OperationReplace">Replace</LABEL>
<BR>

<!--- Text input for the replace regular expression --->
<SPANCLASS="header" ID="replaceheader">Enter the replace regular expression:</SPAN><BR>
<INPUTID="RegExReplace" NAME="RegExReplace" TYPE="Text" SIZE="65" STYLE="font-size:13px">
<BR><BR>

<!--- Textarea where user can type the text to search --->
<SPANCLASS="header">And the text you wish to search:</SPAN><BR>
<TEXTAREANAME="SearchText" WRAP="off" COLS="70" ROWS="6"></TEXTAREA>
<BR>

<!--- Submit button to start the search --->
<INPUTNAME="Submit" TYPE="Submit" STYLE="font-weight:bold" VALUE="Match Now"></TD>
</TR>
</TABLE>

</FORM>

<!-- Display any reults here --->
<SPANid="output"></SPAN>

<!-- Default to find --->
<SCRIPTLANGUAGE="JavaScript">
hideReplaceFields();
</SCRIPT>

</BODY>
</HTML>