当用户去触发点击这个dom元素的时候,会激活这个函数,这个click不会马上压入stack中,也会需要进入callbackQueue中排队执行,当stack中事件执行完为空的时候,event loop 会把click压入栈中,接着console.log('test2');有意思的是你点击了多少次该元素,就会有多少个click在那里排队等待召唤,很神奇,就像下面这张图这样, 最后
To think of it, it is amazing of how long you can keeping going and call yourself a good Javascript engineer without knowing about the Event Loop and rightfully so. In fact heaps of Javascript engineers I know these days who are good at coding ReactJS, have no idea what the event loop ...
including the specific architecture of the target CPU, the size of the loop body, and the number of loop iterations. In some high-level languages like Python, this kind of optimization is usually handled entirely by the interpreter or runtime environment, rather than...
A callback function in JavaScript is a function that is passed as an argument to another function and is invoked after some kind of event.
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This one is pretty straightforward for me:Object.entries()withfor...of. Having a dedicated variable for theitemin the loop is really nice. Was this helpful?AGo Make Things Membershipis the best way to help me create even more free web developer content. ...
Node.js is an open-source JavaScript runtime environment that allows developers to execute JavaScript code for server-side scripting and scalable network applications.
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in the same line, the Python interpreter creates a new object, then references the second variable at the same time. If you do it on separate lines, it doesn't "know" that there's already "wtf!" as an object (because "wtf!" is not implicitly interned as per the facts mentioned abov...
Check if Array Contains a Value or Element in JavaScript JavaScript provides many different methods and ways that allow users to check whether an array contains a value or element. Users can still check with the Array.indexOf() or for loop method. Despit ... ...