条件语句是用于显示/隐藏RIOT标签元素的构造。以下是RIOT支持的三个条件:
- 如果-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true,则使用style =“ display:’none’ ”隐藏元素。
<custom2Tag>
<h2 show = {showMessage}>Using show!</h2>
<script>
this.showMessage = true;
</script>
</custom2Tag>例子
以下是完整的示例。
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>这将产生以下结果:
Using if!
Using show!
Using hide!
作者:terry,如若转载,请注明出处:https://www.web176.com/riotjs/2197.html
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