comparison of two variables using match

**newphpcoder** · 02-27-2013, 08:43 PM

Hi,

Good day!

I have problem in checking if the two values of variables is match or like.

sample 1:

in this sample 1 my condition works fine.

Code:

lot_number = LO130227003
lot_number_scan = LO130227003

if(lot_number === lot_number_scan)
{
alert('correct');
}
else
{
alert('wrong');
}

sample 2:
in this sample 2 my condition did not work.

Code:

lot_number = LO130227003-LO130228001
lot_number_scan = LO130227003
 
if(lot_number === lot_number_scan)
{
alert('correct');
}
else
{
alert('wrong');
}

I tried to find the solution in this problem but I can't find the same problem.
I want to happen is:

Code:

if(LO130227003-LO130228001 LIKE OR Match LO130227003)
{
alert('correct');
}
elseif(LO130227003-LO130228001 LIKE OR Match LO130227003LO130228001)
{
alert('correct');
}
else
{
alert('wrong');
}

I don't know what syntax should I used.

here is my code:

HTML Code:

function sequence(varid)
{
    
   var a=  varid.indexOf("/")
  var b=  varid.slice(0,a); 
   b =  parseInt(b)
    c= (b+1)
var f = varid.slice(a); 


 if (window.event.keyCode==13 || window.event.keyCode==10) {

 var lot_number = document.getElementsByName("lot_number")[b].value;
 var lot_number_scan = document.getElementsByName("lot_number_scan")[b].value;

var counting = document.getElementsByName("lot_number_scan");

counting = counting.length;

 var newid = c + f
 if(c == counting)
 {
  document.getElementById("issued_by").focus();    
 }
 else
 {
  //----In this part I need to check if lot_number like lot_number_scan
 if(lot_number === lot_number_scan)       
 {  
 document.getElementById(newid).focus();     
 }
 else{
    document.getElementsByName("lot_number_scan")[b].value = ''; 
    document.getElementsByName("lot_number_scan")[b].focus(); 
 }
 }

 }
}

I hope someday can help me to fix this problem.

Thank you so much.

**wmwong** · 02-28-2013, 12:04 PM

I'm assuming your lot_number and lot_number_scan are strings. If you want to do matching with strings that are like each other, use regular expressions.

**newphpcoder** · 02-28-2013, 06:09 PM

waht do you mean regular expression can you give an example?

Thank you

**wmwong** · 02-28-2013, 10:55 PM

Here's an entire page about regular expressions in JavaScript.

https://developer.mozilla.org/en-US/...ar_Expressions

**007Julien** · 03-01-2013, 05:57 AM

Use search or test with something like this.

Code:

var lot_number_scan = LO130227003-LO130228001
var lot_number_scan = LO130227003
var pos, rgx = new RegExp(lot_number_scan,'gi');

// Search a string for a specified value
if (-1<(pos = lot_number_scan.search(rgx)) {
      // do something with the position of the match
}
// Test for in a string
if (rgx.test(var lot_number_scan)){
      alert('correct');}
else {
      alert('wrong');}

**newphpcoder** · 03-10-2013, 10:21 PM

Hi,

I tried this code:

Code:

<script type = "text/javascript">

var lot_number = "LO130227003-LO130228001";
var lot_number_scan = "LO130227003";
//alert (new RegExp(lot_number_scan,"gi").test(lot_number)); 

var lot_number = "LO130227003-LO130228001";
var lot_number_scan = "LO130228001";
//alert (new RegExp(lot_number_scan,"gi").test(lot_number)); 

var lot_number = "LO130227003-LO130228001";
var lot_number_scan = "LO130227003LO130228001";
alert (new RegExp(lot_number_scan,"gi").test(lot_number)); 


</script>

and the first and second alert is true but in the third alert the result is false.

how can I make it true, if the real data of lot_number_scan is like that?
Thank you so much

**newphpcoder** · 03-10-2013, 10:30 PM

When I try your code:

Code:

<html>
<head>
<script type = "text/javascript">
  
var lot_number_scan = LO130227003-LO130228001
var lot_number_scan = LO130227003
var pos, rgx = new RegExp(lot_number_scan,'gi');

// Search a string for a specified value
if (-1<(pos = lot_number_scan.search(rgx)) {
      // do something with the position of the match
}
// Test for in a string
if (rgx.test(var lot_number_scan)){
      alert('correct');}
else {
      alert('wrong');}

</script>
</head>
<body>
<b>Testing</b>
</body>
</html>

this part:
if (-1<(pos = lot_number_scan.search(rgx)) { become red

} become red also the partner closing curly bracket

if (rgx.test(var lot_number_scan)){ the var has color red line.

What's wrong or missing in my codes.

Thank you so much

**007Julien** · 03-11-2013, 11:49 AM

Sorry. The proposed code was not right.

Code:

  
var lot_number_scan = "LO130227003-LO130228001";
var lot_number_scan = "LO130227003";
var pos, rgx = new RegExp(lot_number_scan,'gi');

var lot_number_scan = "LO130227003-LO130228001";
var lot_number_scan = "LO130227003";
var pos, rgx = new RegExp(lot_number_scan,'gi');

// Search a string for a specified value
if (-1<(pos = lot_number_scan.search(rgx))) {
      // do something with the position of the match
}
// Test for in a string
if (rgx.test(lot_number_scan)){
      alert('correct');}
else {
      alert('wrong');}

Otherwise, there is no error in this code

Code:

var lot_number = "LO130227003-LO130228001";
var lot_number_scan = "LO130227003LO130228001";
alert (new RegExp(lot_number_scan,"gi").test(lot_number));

lot_number do not contains lot_number_scan !

**newphpcoder** · 03-17-2013, 08:17 PM

I tried the two codes you said.

The first one I got wrong output, the second is false.

Thank you

**newphpcoder** · 03-17-2013, 08:19 PM

Hi

Good day!

I did'nt match the number. I just want to happen is if lot_number has match or like in lot_number_scan it will be true. I want to check for example.

lot_number = 'LO130227003-LO130228001'
lot_number_scan = 'LO130227003LO130228001'

if lot_number_scan has equivalent or match data in lot_number_scan.

for example:

if(lot_number == LO130227003')
{
true
}
elseif(lot_number == LO130228001')
{
true
}
elseif(lot_number == LO130227003LO130228001')
{
true
}
else{
false
}

Thank you

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