問題描述

我正在嘗試編寫一個 php 腳本，該腳本將根據(jù)主下拉菜單的選擇來填充第二個下拉菜單.我想用 jquery 來做所有非頁面刷新的事情.但是我發(fā)現(xiàn)存在的每一件事都很難理解和修改，你知道任何寫得很好且易于理解的東西，或者可能存在的教程嗎?

I'm trying to write a php script that will populate a second drop down menu based on the selection of the a primary drop down menu. I would like to use jquery to do all the non-page refresh stuff. but every thing that I find that exists out there is hard to understand and modify, do you know of anything that was well written and easy to understand or maybe a tutorial that exists out there?

推薦答案

以下是一些代碼，可以讓您了解您想要做什么:

Here's some code that should give you an idea of what you want to do:

HTML

<select id="state" name="state">
    <option value="IL">Illinois</option>
    <option value="IN">Indiana</option>
</select>
<select id="city" name="city">
    <option value="">Please select a state...</option>
</select>

PHP

<?php
    $cities = array(
        'IL' => array( 'Chicago', 'Naperville', 'Decatur', 'Saint Charles' ),
        'IN' => array( 'Gary', 'Miller', 'Portage', 'Merrillville' )
    );

    print json_encode( $cities[ $_POST[ 'state' ] ] );
    exit;
?>

jQuery

jQuery(document).ready(function() {

    jQuery('#state').change(function() {
        jQuery.post(
            'some-url.php',
            {
                'state':jQuery('#state').val()
            },
            function(data, textStatus) {
                jQuery.each(data, function(index, value) {
                    jQuery('#city').append('<option value="' + value + '">' + value + '</option>');
                });
            },
            'json'
        );
    });

});

這篇關(guān)于php下拉菜單填充的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！