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:-
广告