[英]How to dynamically populate options on dropdown lists based on selection in another dropdown?
I have a table which has the information of a category, say a product. 我有一张桌子,上面有类别信息,例如产品。 I have listed them in a dropdown menu. 我已经在下拉菜单中列出了它们。 Now, what I need to do is, list the sub category of the selected category in a next dropdown menu. 现在,我需要做的是,在下一个下拉菜单中列出所选类别的子类别。 I hope, javascript is required, but I am not that familiar with javascript yet. 我希望javascript是必需的,但我对javascript还不熟悉。
Would be much thankful for the help. 非常感谢您的帮助。
You should use AJAX. 您应该使用AJAX。
With jQuery it is very simple: 使用jQuery,它非常简单:
$('#select1').change(function(){
$.ajax({
//Send to php script category id. This script returns all subcategories
$.ajax({
type: "POST",
url: location.href,
data: data,
success : function (data)
{
// Your return categories in data
// Append list options to select2
}
});
});
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