Can I have multiple values in a single variable?

Question

As the title "Can I have multiple values in a single variable?"

First, I have got this form:

<form name="myform">
 <input type="text" name="mytext">
 <input type="button" onClick="clickButton()">
</form>

Then, take a look at my script.

<script>
function clickButton() {
  var x = document.myform.mytext.value;
  var a = 13;
  var b = 17;
  var c = 19;

  if (x == a) {
    alert('hello');
  } else if (x == b) {
    alert('hello');
  } else if (x == c) {
    alert('hello');
  } else {
    alert('goodbye');
  }
}
</script>

Is there any way to make one variable with multiple values? Like, var myvalues=1,2,3;

Use an array? developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/… — therealrootuser
– therealrootuser, Commented Dec 20, 2014 at 8:31
No there is not such a variable. But you can use array or even object. — sadrzadehsina
– sadrzadehsina, Commented Dec 20, 2014 at 8:31
Another option would be using strings, you can enter in your textbox "1,2,3" and then in if statements look for those substrings — frogatto
– frogatto, Commented Dec 20, 2014 at 8:36

T J · Accepted Answer · 2014-12-20 08:50:30Z

4

The correct response to your question would be to use an array. But from what you're trying to do, Looks like your looking for an object, specifically the bracket notation:

function clickButton() {
  var x = document.myform.mytext.value,
    greetings = {
      "13": "hello",
      "17": "hello",
      "19": "hello"
    }
  alert(greetings[x] || "goodbye");
}

<form name="myform">
  <input type="text" name="mytext">
  <input type="button" onClick="clickButton()" value="greet">
</form>

edited Dec 20, 2014 at 8:50

answered Dec 20, 2014 at 8:37

T J

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Comments

Marco Bonelli · Accepted Answer · 2014-12-20 08:40:53Z

What you need here is an Array. An array is a variable that can hold mutiple values and/or elements. You can assign to it your values and then use the [n] selector where n is a number between 0 (first element) and 2 (in this case is 2 because you've only got 3 variables, so their positions will be 0, 1, 2).

Then, to make your code clearer, you can use the switch() statement to check the values and execute some code when a certain value is found.

Here is an example:

function clickButton() {
    var x = document.myform.mytext.value,
    values = [13, 17, 19];

    switch (x) {
        case values[0]:
        case values[1]:
        case values[2]:
            alert("hello");
            break;

        default:
            alert("goodbye");
            break;
    }
}

Tilak Patidar · Accepted Answer · 2014-12-20 08:43:10Z

-1

use a object and give callbacks on values

  function abc(val){

      alert(val);
  }

 var doSomething = {
    "1": abc('1');,
    "2": abc('2');,
    "3": abc('3');
  }

answered Dec 20, 2014 at 8:43

Tilak Patidar

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