更改选择框中的选项 [英] Change options in select box
本文介绍了更改选择框中的选项的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
两个选择框,第二个选择框选项应根据您在第一个中选择的内容而改变.我该如何使用jQuery?
two select boxes,second select box options should change depending on what you chose in first. how can i do this with jquery?
<select class="units">
<option value="1">Sve ponude</option>
<option value="2">Srbija</option>
<option value="3">Grcka</option>
</select>
<select class="units">
<option value="1">Sve ponude</option>
<option value="2">Novi Sad</option>
<option value="3">Beograd</option>
</select>
推荐答案
var one = ['Madison','Janesville', 'Green Bay'];
var two = ['Sacramento', 'Los Angeles', 'San Fransisco'];
var three = ['Richmond', 'Roanoke', 'Harrisonburg'];
$('#ddl1').change(function(){
//clear values
$('#ddl2').html('');
//find which list to use
var list = [];
switch($(this).val()){
case "1":
list = one;
break;
case "2":
list = two;
break;
case "3":
list = three;
break;
}
//populate dropdown
$.each(list, function(index, value){
$('#ddl2').append("<option>"+value+"</option>");
});
});
https://jsfiddle.net/b1nygzxm/
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