适用于：
obj.click()
行内 onclick
javascript:函数名()
示例代码：
<html>
<head>
<link href="layui/css/layui.css" media="all">
</head>
<body>
<a class="layui-btn" id="test" href="javascript:;" >测试</a><br/><br/>
<a class="layui-btn" onclick="hello('this is a test')" href="javascript:;" >hello</a>
<script src="layui/layui.js"></script>
<script type="text/javascript">
layui.use(["jquery","layer","form"],function(){
var $ = layui.$,layer = layui.layer,form = layui.form;
$("#test").click(function(){
hello("张三");
});
window.hello = function(obj) {
layer.msg("hello world,"+obj);
}
});
</script>
</body>
</html>
测试：
（1）点击测试按钮
（2）点击 hello 按钮
