function jumpChoose(argu) {
//询问框
var index = layer.confirm('下载文件还是在线预览呢？', {
btn: ['在线预览','下载',"关闭"], //按钮
shade: false //不显示遮罩
}, function(){
//关闭提示框
layer.close(index);
}, function(){
//关闭提示框
layer.close(index);
}, function(){
//关闭提示框
layer.close(index);
});
}
效果：
