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Editorial Team
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Asked: 2026-06-04T06:59:33+00:00

So I had been using this generic code to create a URL from the

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So I had been using this generic code to create a URL from the form elements

function submiturl() {
    url="Search.do?call=JS"; 
    var elem = document.getElementById('searchInput').elements;
    for(var i = 0; i < elem.length; i++) {
        url = url + "&" + escape(elem[i].name) + "=" + escape(elem[i].value);
    }
    url = url.substring(0,(url.length-1));
   alert(url);
}

however it does not handle checkboxes properly – I only want to add to the URL if the checkboxes are checked. So if you had this html

<html>
<body>
<form name="searchInput" id ="searchInput">
    <input name="first" type="checkbox" value="123"/>One two three
    <input name="second" type="checkbox" value="456"/>Four five six
    <button type="button" onClick="submiturl();">Submit</button>
</form>
</body>
</html>

it will create the URL using the value for both checkboxes regardless if they were checked or not.

So how can I modify my javascript to check if it is a checkbox and is checked?

thanks!

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1 Answer

  1. Editorial Team
    function submiturl() {
    var url="Search.do?call=JS", 
        els = document.getElementById("searchInput").elements
    ;
    for(var el, i = 0, n = els.length; i < n; i++) {
        el = els[i];
        if (el.checked || el.type !== "checkbox") {
            url += "&" + encodeURIComponent(el.name) + 
                   "=" + encodeURIComponent(el.value)
            ;
        }
    }
    alert(url);
}
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