Question

how can concatenate the set variable in a for loop to be use as name in an input to get the value?

<script>
var k=0;
var counter = 50;

    for(k=0; k<=counter; k++){
        var choices = $('input[name=choices'+ k]).val();
        var choices = choices.replace(/\ /g, '%');
        var choices_ = choices_ +";"+ choices;
    }
   alert(choices);
</script>

there are multiple input field namely choices1,choices2 and so on.
how can i get the value of those fields using for loop?
how can i concatenate the name choices and the variable k?
can you help me solve this problem??

Answer 1

You could always just iterate using a specialized attribute selector and .each():

var choices = $('input[name^="choices"]'),  // name starts with "choices"
    choices_val = []                        // an array!
    ;

choices.each(function () {
    choices_val.push($(this).val().replace(/\ /g, '%'));
});

alert(choices_val.join(';'));

It saves you the overhead (and headache) of having to pick out and mangle a specific attribute value (choices1, choices2, etc) and having to select it out via selector (’cause I’d think that selecting via $(this) is faster than $('input[name="choices1"]')).