1.2 Encapsulating asynchronicity 2. What is a promise 2.1 Extracting the promise fulfill value 2.2 Extracting the promise rejection error 2.3 Extracting value and error 3. Chain of promises 4. async/await 4.1 await-ing promise value 4.2 catch-ing promise error ...
3) What is the concentration of a solution created by dilutin You have a 5 M NaCl stock solution. a) How much NaCl (in g) do you need to make 1 liter of the 5 M stock solution? b) How much stock solution will you need if you want to make 100 ml of 50 mM NaCl? c) W...
greet: function() { ... }is amethod definition. Note the additional presence of a colon andfunctionkeyword. Adding methods dynamically The method is just a function that is stored as a property on the object. That's why you can add methods dynamically to an object: ...
She is afraid f becming fat. She weighs herself every day. 她怕发胖。每天都称体重。 【知识拓展】 He ___(weight)nly 70 kils nw after taking a balanced diet. 【答案】weighs (2)time在此意为"倍数,次数",表示三倍或三倍以上时使用。表示 "A 比B长(宽、高、大、重等)N倍"时,其结构为"...
What molarity (M) is90mgmLof glucose (MW=180) solution? Molarity: Molarity is a way that chemists measure the concentration of a solution that considers the number of particles (ie moles) that react in a chemical equation and the volume. Therefore the molarity of a solution is the n...
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After getting a good grasp of what a DOM node is, now is the time to differentiate the DOM node and element. If you get well thenodeterm, then the answer is obvious: an element is a node of a specific type — element (Node.ELEMENT_NODE). Along with types like document, comment, ...
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