RIOT.JS - 条件语句

条件句是用于显示/隐藏 RIOT 标记元素的构造。以下为 RIOT 支持的三种条件句：-

if - 根据传递的值添加/删除元素。

<custom2Tag>
   <h2 if = {showMessage}>Using if!</h2>
   <script>
      this.showMessage = true;      
   </script>
</custom2Tag>

show - 如果传递的值为 true，则使用 style = "display:' ' " 显示元素。

<custom2Tag>
   <h2 show = {showMessage}>Using show!</h2>
   <script>
      this.showMessage = true;      
   </script>
</custom2Tag>

hide - 如果传递的值为 true，则使用 style = "display:'none' " 隐藏元素。

<custom2Tag>
   <h2 show = {showMessage}>Using show!</h2>
   <script>
      this.showMessage = true;      
   </script>
</custom2Tag>

示例

以下是完整示例。

custom2Tag.tag

<custom2Tag>
   <h2 if = {showMessage}>Using if!</h2>
   <h2 if = {show}>Welcome!</h1>
   <h2 show = {showMessage}>Using show!</h2>
   <h2 hide = {show}>Using hide!</h2>
   <script>
      this.showMessage = true;
      this.show = false; 
   </script>
</custom2Tag>

custom2.htm

<!DOCTYPE html>
<html>
   <head>
      <script src = "https://cdnjs.cloudflare.com/ajax/libs/riot/3.13.2/riot+compiler.min.js"></script>
   </head>
   <body>
      <custom2Tag></custom2Tag>
      <script src = "custom2Tag.tag" type = "riot/tag"></script>
      <script>
         riot.mount("custom2Tag");
      </script>
   </body>
</html>

将产生以下结果：-

打印页面

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