Applying a variable to a javascript function

Question

Need to know how to apply a variable to a javascript function. I'm currently trying to get my code to work but it's not recognizing my value as a function type.

    <!DOCTYPE html>
<html>
<body onload="myFunction()">

<select>
    <option>1</option>
</select>
<br/>
<select>
    <option>1</option>
</select>

<script>
function myFunction()
{
    if(typeof document.body.ontouchstart == "undefined"){actionIn = "onmouseover"; actionOut = "onmouseout"}
    else{actionIn = "ontouchstart"; actionOut = "ontouchend";}
    document.write(actionIn+" "+actionOut);
    var elem = document.getElementsByTagName("SELECT");
    for (var i = 0;i < elem.length; i++){
        elem[i].actionIn = function(){this.style.background='red';}
        elem[i].actionOut = function(){this.style.background='';}
    }
}
</script>

</body>
</html>

SLaks · Accepted Answer · 2013-04-23 14:23:23Z

3

You're trying to write

elem[i][actionIn] = ...;

answered Apr 23, 2013 at 14:23

SLaks

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3 Comments

user2309465 Over a year ago

SyntaxError: missing name after . operator [Break On This Error] elem[i].[actionIn] = function(){this.style.background='red';}

user2309465 Over a year ago

SyntaxError: missing name after . operator [Break On This Error] elem[i].[actionIn] = function(){this.style.background='red';}

SLaks Over a year ago

@user2309465: Yes; you should not have a .. (just like [i])

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