Remove matching string in input value with comma

Question

How can I remove matching string with comma before or after

Ex :

<input value="1,2,3,4,5,6,7,8,9,10">

jQuery :

var input = $("input");
var val = input.val();
var random = Math.ceil(Math.random() * 10);
var new_val = val.replace(random,"");

input.val(new_val);

Values not look like 1-10 (this is a example)

Problem with how can I remove comman before or after too ?

Think about if matching string has first position and last position. So it's problem

PS : I have to find by string, not index or something else

Playground : http://jsbin.com/ulikof/1/edit

Any ?

George Mickleburgh · Accepted Answer · 2013-03-14 11:59:10Z

2

If add you add the trailing comma when selecting the random number, it will remove the single comma and display correctly:

var input = $("input");
var val = input.val();
var random = Math.ceil(Math.random() * 10);

if(val.indexOf(random) != 0) {
  random = ',' + random;
}
else {
  random = random + ','; 
}

var new_val = val.replace(random,"");

input.val(new_val);

edited Mar 14, 2013 at 11:59

answered Mar 14, 2013 at 11:41

George Mickleburgh

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2 Comments

l2aelba Over a year ago

what about last string like 10 cannot replace by 10, its not found

l2aelba Over a year ago

+ else if (val === random) {random = random} , if just only one string left

Seimen · Accepted Answer · 2013-03-14 12:26:29Z

1

Here's a generic way using pure JS in which you could add any amount of numbers without updating the code.

http://jsfiddle.net/zuMNf/1/

var input = document.getElementsByTagName('input')[0], // [0] or loop through inputs
    val = input.value,
    arr = val.split(','),
    len = arr.length,
    random = Math.ceil(Math.random() * len);

for(var i = 0; i < len; i++) {
    if(parseInt(arr[i]) == random) {
        var j = i;
    }
};

arr.splice(j, 1);

input.value = arr.join(',');

edited Mar 14, 2013 at 12:26

answered Mar 14, 2013 at 11:45

Seimen

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1 Comment

l2aelba Over a year ago

No , I have to find with string , not index

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