how to remove everything except numeric 1234567890 using javascript

Question

i have the following javascript how and where to set so when it will get the data and shows in a textbox it will show only numeric values:

<script type="text/javascript">
function showData($sel){
   var str='';
   document.getElementById("demo").innerHTML;
   for (var i=0;i<sel.options.length;i++){
           str+=(str!='') ? ', '+sel.options[i].value : sel.options[i].value;
       }
   }
   sel.form.selectedFruits.value = str;
}
</script>

i have multiple select dropdown and it has multiple values like Staff No and email so i dont want to show email in text box only staff no and even i dont want to remove email from values.

it is working fine except what i want to do :D

looks like `sel` would be undefined, `$sel` is your parameter — Smern, Aug 23 '13 at 12:38
Discover `.replace()`:http://www.w3schools.com/jsref/jsref_replace.asp - so `.replace(/[^0-9]/, '')` will fit — Alma Do, Aug 23 '13 at 12:39
this can help: http://stackoverflow.com/questions/6649327/regex-to-remove-letters-symbols-except-numbers — Adnan K., Aug 23 '13 at 12:40
@AlmaDoMundo Better yet, don't refer to W3Schools https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replace — Pavlo, Aug 23 '13 at 12:49

score 2 · Accepted Answer · answered Aug 23 '13 at 12:45

2

A simple solution, if you want to get only numbers from a string (or html in your example), will be :

var str= document.getElementById(id).innerHTML;
return str.replace(/[^0-9]/ig, '');

See this jsfiddle.

answered Aug 23 '13 at 12:45

soyuka

8,839
3
39
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score 0 · Answer 2 · answered Aug 23 '13 at 12:42

0

if I've gotten the point correctly try something like this

<script type="text/javascript">
function showData($sel){
   var str=[];
   document.getElementById("demo").innerHTML;
   for (var i=0;i<sel.options.length;i++){
           str[i]+=sel.options[i].value.replace(/\D/g, ''); // remove everything except digits
       }
   }
   sel.form.selectedFruits.value = str.join();
}
</script>

answered Aug 23 '13 at 12:42

i100

4,529
1
22
20

thanks your given code is not working not showing anything but i got an idea from your code and its working now only i have changed only one line in my code and i got it working: str+=(str!='') ? ', '+sel.options[i].value.replace(/\D/g, '') : sel.options[i].value.replace(/\D/g, ''); – usman610 Aug 23 '13 at 12:49
1

yes I've missed the += should be str[i]=sel.options[i].value.replace(/\D/g, ''); and I'd prefer to put values by document.getElementById("selectedFruits").value = str.join(); – i100 Aug 23 '13 at 14:18

score 0 · Answer 3 · answered Aug 23 '13 at 14:01

0

<script type="text/javascript">
function showStaffno(sel){
   var str='';
   document.getElementById("demo").innerHTML;
   for (var i=0;i<sel.options.length;i++){
       if (sel.options[i].selected){
           str+=(str!='') ? ', '+sel.options[i].value.replace(/\D/g, '') : sel.options[i].value.replace(/\D/g, '');
       }
   }
   sel.form.selectedFruits.value = str;
}
</script>

answered Aug 23 '13 at 14:01

usman610

479
1
5
22

this is the working code / answer of this question with the help/ idea from the code of Mr. i100 ... – usman610 Aug 23 '13 at 14:03

how to remove everything except numeric 1234567890 using javascript

3 Answers3