JavaScript30

When I was reading the Front-end developer's roadmap, I deeply agree with "to build as many projects as possible" in Important Tip part and release that is exactly what I lack in my CV and GitHub. Thus, I joined the Build 30 JavaScript Projects in 30 Days challenge, created by Wes Bos, and will record down and track my study path in this challenge. 🌟

D01

• Self-defined HTML attribute form: data-name. Use in the same way as standard HTML tag attribute, like <div class ="key" data-name="65">
• Attribute selector
• querySelector
• Can not add evetListener to an array, have to use forEach to get every element.

D02

• When use transform: rotate(Xdeg) to rotate an element with X degree in CSS, in default it rotates on the centre middle of that element. ->Fix: use transform-origin:X%
• setInterval(func, delayTime: 重复调用一个函数或执行一个代码片段，在每次调用之间具有固定的时间间隔，单位为毫秒。ex: setInterval(setDate, 1000); 每隔1秒就调用一次函数setDate