Question

I have the following function:

function red(opt) {
    var sqr;
    sqr="r"+parseInt(opt);
    hilight_css = {"background-color":"#f00"};
    $(#sqr).css(hilight_css);  
}

I call this function from another function

red(questions);

the variable questions has the value 1.
The id of my div is r1.
When I use this code it does not work. Can anybody help fix this?

If I use alert(sqr) to show me the value of sqr it says r1
but the color of the div doesn’t change

Answer 1

You have to pass a string to the $ function, like so:

$("#" + sqr).css(hilight_css);