ajax封装
 ```
    admin.req('url',{
        参数一: 'xxx',
        参数二: 'xxx'
    }, function(res){
        alert(res.code + '-' + res.msg);
    }, 'get');
    
    参数一 请求的url
    参数二 请求参数
    参数三 请求回调（失败也进此回调，404、403等）
    参数四 请求方式，get、post、put、delete等
    
    admin.ajax参数跟$.ajax参数一致，用法如下：
    admin.ajax({
        url: 'url',
        data: {},
        type: 'post',
        dataType: 'json',
        success: function(res){
            alert(res.code + '-' + res.msg);
        }
    });
    
    admin.req和admin.ajax都实现了自动传递header、预处理、系统错误依然回调到success等功能。
    
    自动传递header
    重写admin的getAjaxHeaders方法
    
    admin.getAjaxHeaders = function (requestUrl) {
        var headers = new Array();
        headers.push({name: 'token', value: 'xxxxx'});
        return headers;
    }
    
    重写admin的ajaxSuccessBefore方法
    
    admin.ajaxSuccessBefore = function (res, requestUrl) {
        if(res.code==401){
            alert('登录超时，请重新登录');
            return false;  // 返回false阻止代码执行
        }
        return true;
    }
    
```   
###xm-select
    https://maplemei.gitee.io/xm-select/#/component/install
###treetable
    https://gitee.com/whvse/treetable-lay
    https://whvse.gitee.io/treetable-lay/demo2x/index.html
###输入框输入负数问题
   onKeypress="return (/[\d]/.test(String.fromCharCode(event.keyCode)))"
####关闭提示
    autocomplete="off"
####个性化定制
UDM
#### ios 页面
    onclick="view('{{ item.savePath }}')"
    <script>
            function setupWebViewJavascriptBridge(callback) {
                if (window.WebViewJavascriptBridge) {
                    return callback(WebViewJavascriptBridge);
                }
                if (window.WVJBCallbacks) {
                    return window.WVJBCallbacks.push(callback);
                }
                window.WVJBCallbacks = [callback];
                var WVJBIframe = document.createElement('iframe');
                WVJBIframe.style.display = 'none';
                WVJBIframe.src = 'https://__bridge_loaded__';
                document.documentElement.appendChild(WVJBIframe);
                setTimeout(function() {
                    document.documentElement.removeChild(WVJBIframe)
                }, 0)
            }

            function view(url) {
                // window.location.href = "download://" + url;
                setupWebViewJavascriptBridge(function(bridge) {
                    bridge.callHandler('Download', {'url':url}, function responseCallback(responseData) {
                        console.log("JS received response:", responseData)
                    })
                })
            }
        </script>  
 ### easyweb
 {"theme":"theme-sky-blue","openFooter":true,"cacheTab":true,"openTab":true,"tabAutoRefresh":true}