从选项字段中获取文本

Question

我选择了带有两个选项'first'和'second'的表单，当我更改select选项时，我会看到更改准时，但此代码不起作用：（

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
Condition <span class="condition">---</span><br/> 
Select value <span class="value">---</span>

<script type="text/javascript">
  $("#test").change(function() {
    var test = $('#test option:selected').text();
    $('.value').text(test);

    if test == "first" {
      var condition = 1
    } else if test == "second" {
      var condition = 0
    }
    $('.condition').text(condition);
  });
</script>

Answer 1

if else语句

中存在语法错误

试试这个

if (test == "first") {
     var condition = 1
} else if (test == "second") {
     var condition = 0
}