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Javascript 单击按钮时如何更改所选选项值_Javascript_Jquery - Fatal编程技术网

Javascript 单击按钮时如何更改所选选项值

Javascript 单击按钮时如何更改所选选项值,javascript,jquery,Javascript,Jquery,单击按钮时更改选项值 clickme1 单击我2 更改值1 更改值2 检查更新的JSFIDLE:- 你的尝试在哪里?谷歌怎么了?CSStag有什么用途吗?编程代码的第一步是什么? $('#dynamicChange').val('1').trigger('change'); $('#dynamicChange').val('2').trigger('change');

单击按钮时更改选项值

clickme1
单击我2
更改值1
更改值2

检查更新的JSFIDLE:-


你的尝试在哪里?谷歌怎么了?
CSS
tag有什么用途吗?编程代码的第一步是什么?
$('#dynamicChange').val('1').trigger('change');

$('#dynamicChange').val('2').trigger('change');