Changing a page from DropDownList using jQuery_问答_开发者

Changing a page from DropDownList using jQuery

开发者 https://www.devze.com 2023-01-07 05:21 出处：网络

I have a simple jQuery script that selects the current page from a static dropdownlist, and when the selection changes the script also modifies the href attribute of an anchor tag to reflect the navig

<select name="PageSelectDropDown" id="PageSelectDropDown"> 
    <option value="Insulation">Insulation</option> 
    <option value="Windows">Windows</option> 
    <option value="Siding">Siding</option> 
    <option value="Roofing">Roofing</option> 
    <option value="Gutters">Gutters &amp; Gutter Protection</option> 
    <option value="PatioDoors">Patio Doors</option>
</select> 
<a href="" id="clicker">Go!</a> 

<script type="text/javascript">
$(document).ready(function () {
    //get the current page
    var cPage = '<%= ViewData["CurrentPage"] %>';

    //select the current page from the list
    $("#PageSelectDropDown > option").each(function () {
        if ($(this).val().toLowerCase() == cPage.toLowerCase()) {
            $(this).attr("selected", "selected");
        }
    });

    //change the link target
    $("#PageSelectDropDown").change(function () {
        var str = "";
        $("#PageSelectDropDown option:selected").each(function () {
            str += $(this).val() + " ";
        });
        $("#clicker").attr("href", "/Product/" + str.trim());
        if (cPage != str.trim()) {
            $("#clicker").click();
        }
    });
});
</script>

The only improvement I would like to see on this is for page开发者_运维百科 to automatically change ('auto-click' anchor tag) when the user selects a different page from the dropdownlist.

Thanks in advance!

If I understand your question correctly, you are asking how do you automatically redirect to the given url, instead of having a click needed?

With Javascript, you can simply use the window.location property to redirect the browser.

window.location = '/somepath/someurl.htm';

This will bypass any need for a button click, etc. Just set the location to whatever value is selected in the dropdown.

Here's a slimmer version of what I think you're trying to do:

<!DOCTYPE html>
<html lang"en">
<head>
    <title>Select Me</title>
    <script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js"></script>
    <script type="text/javascript">

        $(function () {

            var cPage = 'Roofing';

            $("#PageSelectDropDown > option[value=" + cPage + "]").attr("selected", "selected");

            $("#PageSelectDropDown").change(function () {
                window.location.href = "/Product/" + $("#PageSelectDropDown option:selected").attr('value');
            });
        });

    </script>
</head>
<body>
    <div>

        <select name="PageSelectDropDown" id="PageSelectDropDown"> 
            <option value="Insulation">Insulation</option> 
            <option value="Windows">Windows</option> 
            <option value="Siding">Siding</option> 
            <option value="Roofing">Roofing</option> 
            <option value="Gutters">Gutters &amp; Gutter Protection</option> 
            <option value="PatioDoors">Patio Doors</option>
        </select> 

    </div>
</body>
</html>

Try window.location.replace(). It will redirect to the page automatically.