fs.exists(reqPath,function(exists){if(!exists){ consloe.log(reaPath+ ' not exists.'); }else{//do something} }); }); 服务端调用后会提示 xxx not exists。不论这个文件是否存在都会提示这个错误。这明显是fs.exists这个回调参数都会false,才会出现这个情况,也就是说这个路径下文件无法找到相应文件。...
**/add_action('wp_footer','bdPushData',999);if(!function_exists('baidu_check_record')){functionbaidu_check_record($url,$post_id){$baidu_record=get_post_meta($post_id,'baidu_record',true);if($baidu_record!=1){$url='http://www.baidu.com/s?wd='.$url;$curl=curl_init();curl_s...
1、 function CheckImgExists(imgurl) { var ImgObj = new Image(); //判断图片是否存在 ImgObj.src = imgurl; //没有图片,则返回-1 if (ImgObj.fileSize > 0 || (ImgObj.width > 0 && ImgObj.height > 0)) { return true; } else { return false; } } 2、JS+XMLHTTP var oreq = new...
function(exports,require,module,__filename,__dirname){console.log("这是模块m1");leta=100;b=200;//输出当前函数console.log(arguments.callee+"");} (6)、每个模块中都包含如下5个对象: exports:导出对象,默认为{} require:导入函数,使用该函数可以实现模块的依赖 module:模块信息,用于记录当前模块的所有...
functionpass(fn,file,scope){// 闭包给回调函数传参varargs=[file];returnfunction(exists){varfnArgs=[exists].concat(args);fnArgs.push.apply(fnArgs,arguments);returnfn.apply(scope||this,fnArgs);};}functionexistCallBack(exists,fp){// 回调if(exists){console.log('ok, file : '+fp);}else{co...
function merge(target,source){for(let keyinsource){if(keyinsource&&keyintarget){//如果target与source有相同的键名 则让target的键值为source的键值 merge(target[key],source[key])}else{target[key]=source[key]//如果target与source没有相通的键名 则直接在target新建键名并赋给键值}}}let o1={}let o2...
{return;}collection.indexExists('date_-1_level_1',function(err,result){//判断数据集合索引if(!result){collection.createIndex({date:-1,level:1},function(err,result){//建立索引,其中-1表示降序,1表示升序,前端的key表示对象。});if(global.MONGO_SHARD){shardCollection(db,collection,collectionName)...
var server = http.createServer(function (request, response) { var pathname = url.parse(request.url).pathname; var realPath = "assets" + pathname; path.exists(realPath, function (exists) { if (!exists) { response.writeHead(404, {
[373dbb0e6c] - doc: mark --env-file-if-exists flag as experimental (Juan José) #56893 [d436888cc8] - doc: fix typo in cjs example of util.styleText (Deokjin Kim) #56769 [91638eeb4a] - doc: clarify sqlite user-defined function behaviour (René) #56786 [bab9c4d331] - events...
letfs=require("fs")constuserFile=newDir+'/user.json';console.log(userFile)if(fs.existsSync(userFile)){console.log('user.json file is exists!')constf=`${newDir}/${Date.now()}.json`constfcp=`${newDir}/${Date.now()}cp.json`constcpf=fs.copyFileSync(userFile,fcp);constrnf=fs.ren...