spain专题
预约排队叫号系统，通过微信就可以实现叫号取号一系列流程 var str=“The rain in SPAIN stays mainly in the plain“；
<p id="demo">单击按钮显示matches</p><button onclick="myFunction()">点我</button><script>function myFunction(){var str="The rain in SPAIN stays mainly in the plain"; var n=str.match(/ain/g);document.getElem