从PDF转换
转换为PDF
从PDF处理
从CAD转换
转换为CAD
从图片转换
转换为图片
文件压缩
电子书转换
使用技巧
客户端下载
Ask Time：2013-02-12T06:57:03 Author：fizban
Javascript functions can return objects or undefined. I'm considering adopting a policy of always returning the object on which a function is called unless some other value is needed in order to facilitate method chaining. Is there overhead associated with doing this by default even when there isn't a perceived need to chain at the time the function is written?
Javascript functions can return objects or undefined. I'm considering adopting a policy of always returning the object on which a function is called unless some other value is needed in order to
I am new to programming and Javascript, and I am trying to understand the difference (if any) in the following code snippets: Snippet 1: try { var subjects = mbox.param('subjects'); return subj...
I have problem in understanding that what happens when we simply return a value or when we return Promise.resolve() from a function. Specifically: I am trying to understand how promises chaining wo...
What is the difference between returning an action vs returning the whole function in Page Object? this.download = function() { element(by.id('modal-download-button')).click(); return this; };...
As a curiosity i held one experiment in objective C: My assumtion before starting the experiment was function returning value should take more time (Nanoseconds) than function with no returns. Two
I'm reading Eloquent JS and the example of closures has a code of block that returns a function returning a value. What is the difference between that and returning the value right away. // return...
What would be the best signature of a function returning a class object by value or something special if object does not exists? For function returning more than one object, function prototype is ...
When making a method in Java that returns a value, I can always return the value of a calculation or a variable that holds said value. For example: public int sum(int a, int b) { return a+b; ...
In the closure compiler, is there any difference between returning a void type versus returning an undefined type. /** * @return {void} */ function myFunction() {} /** * @return {undefined} */ fu...
What is the difference between these two methods to update the value of a (global) variable in Javascript? var a = true; a = false; // UPDATING WITH FUNCTION/RETURNING console.log(a); // false...