how to call regexp match depend given input value [duplicate]

Question

One regexp function is below:-

$(document).ready(function(){
  $('button').click(function(){
  var str = 'abcdefghijklmnopqrstuvwxyz';
    var spl = str.match(/input/g);//i need string match depent on value of input
  $('#demo').text(spl);
  });
  });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<input type="text" id="text">
<button>call</button>
<p id="demo"></p>

how to match the value from corresponding input value. eg:

input k out k;
input y out y;

Thanks in advance...

Could you please clarify? The question and the code are rather unclear. — Wiktor Stribiżew
– Wiktor Stribiżew, Commented May 6, 2016 at 10:57
Are you asking how to convert the text from input to a regex? — SamWhan
– SamWhan, Commented May 6, 2016 at 10:59

Meyer Cohen · Accepted Answer · 2016-05-06 11:25:57Z

1

You have to get the input value and then use the javascript RegExp object where you can put the input value in the constructor.

Here's what you need :

$(document).ready(function(){
  $('button').click(function(){
    var str = 'abcdefghijklmnopqrstuvwxyz';
    var inputValue = $("#text").val();
    inputValue = inputValue.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
    var spl = str.match(new RegExp(inputValue));
    $('#demo').text(spl);
  });
 });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<input type="text" id="text">
<button>call</button>
<p id="demo"></p>

edited May 6, 2016 at 11:25

answered May 6, 2016 at 10:59

Meyer Cohen

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1 Comment

Wiktor Stribiżew Over a year ago

Type * into the input box and see the console text.

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