return {d,c,f} } 1. 2. 3. 4. 5. 6. #4楼 不,但是您可以返回一个包含您的值的数组: function getValues() { return [getFirstValue(), getSecondValue()]; } 1. 2. 3. 然后,您可以像这样访问它们: var values = getValues(); var first = values[0]; var second = values[1]; 1....
导入(import)其他模块的功能 二、CommonJS:服务端的模块化方案 CommonJS设计用于服务器环境(如Node.js),特性: 同步加载→ 适合本地文件系统[1] 使用require()导入,module.exports导出[2] 示例1:导出对象 // math.jsfunctionadd(a, b) {returna + b; }module.exports= { add };// 导出模块功能 [^5]/...
; object .defineproperty(a, "b" ,{ set : function ( value ) { bvalue=value; console .log( "setted" ); }, get : function ( ) { return bvalue; } }); a.b; //1 a.b=[]; //setted a.b=[ 1 , 2 , 3 ]; //setted a.b[...
Here, we are going to learn what callbacks are in JS, then move over quickly to asynchronous JavaScript and finally look at how we can return a value from an asynchronous callback function?
Note that in the default configuration, without setting runScripts, the values of window.Array, window.eval, etc. will be the same as those provided by the outer Node.js environment. That is, window.eval === eval will hold, so window.eval will not run scripts in a useful way. We str...
If using values with more than a few digits, it is recommended to pass strings rather than numbers to avoid a potential loss of precision. // Precision loss from using numeric literals with more than 15 significant digits.newDecimal(1.0000000000000001)// '1'newDecimal(88259496234518.57)// '882...
Pass "eager" to always replace function calls whenever possible, or a positive integer to specify an upper bound for each individual evaluation in number of characters. expression (default: false)— Pass true to preserve completion values from terminal statements without return, e.g. in ...
An object or a function returning an object representing grid load strategy. Load strategy defines behavior of the grid after loading data (any interaction with grid controller methods including data manipulation like inserting, updating and removing). There are two build-in load strategies: Direct...
return num % 2 == 1; } function isEven(num) { return num % 2 == 0; } function isSane(num) { return isEven(num) || isOdd(num); } var values = [7, 4, "13", -9, Infinity]; values.map(isSane); // A. [true, true, true, true, true] ...
This is very useful when combined with the $find operator to run sub-queries and return arrays of values from the results. { $aggregate: path} Usage var fdb = new ForerunnerDB(), db = fdb.db("test"), coll = db.collection("test"); coll.insert([{ _id: 1, val: 1 }, { _id...