Asp.net Razor,语法错误 - onclick事件参数

Question

<input type="button" value="Delete" onclick="deleteMember(@Model.ID, '@ViewBag.returnUrl')"/>

该代码有4个错误,2个语法错误和2个Unterminated字符串常量.

我该怎么做才能解决这些错误？

Answer 1

你可以在一个Html.Raw电话中将其分解:

<input type="button"
       value="Delete"
       onclick="@(Html.Raw(String.Format("deleteMember({0}, '{1}')",
           Model.ID,
           Html.Encode(ViewBag.returnUrl)
       )))"
/>

或者将其分配给string第一个,然后在属性中引用该变量.

@{
  String onclick = String.Format("deleteMember({0}, '{1}')",
      Model.ID, Html.Encode(ViewBag.returnUrl));
}
<input type="button" value="delete" onclick="@onclick" />

第三种选择是分开关注; 保持标记和脚本分开.尼尔打败了我,但是:

<input type="button" value="delete"
    data-task="delete" data-id="@Model.ID" data-returnurl="@ViewBag.returnUrl" />

<!-- .... -->

<script>
  var buttons = document.getElementsByTagName('INPUT');
  for (var b = 0; b < buttons.length; b++){
    if (buttons[b].type != 'button') continue;
    switch (buttons[b].getAttribute('data-task') || ''){
      case 'delete':
        // read data-id & data-returnurl. Do something with them, and
        // move on.
        break;

      // other actions
      case 'add':
      case 'update':
      default:
        break;
    }
  }
</script>

虽然奇怪的是第一个括号与剃刀混淆(即使它在属性中声明).我自己也不会期待这种行为.