2022年10月23日
30秒学会 JavaScript 片段 – Hash string into number
Hashes the input string into a whole number. Use String.prototype.split() and Array.prototype.reduce...
30秒学会 JavaScript 片段
2022年10月15日
30秒学会 JavaScript 片段 – Common regular expressions
Exact string match Use the ^ and $ anchors to match the start and end of the string, respectively. A...
2022年10月14日
30秒学会 JavaScript 片段 – How can I use JavaScript to reload the page?
The short answer Most often than not, window.location.reload() is all you need to reload the current...
2022年10月13日
30秒学会 JavaScript 片段 – Replace last occurrence in string
Replaces the last occurrence of a pattern in a string. Use typeof to determine if pattern is a strin...
2022年10月8日
30秒学会 JavaScript 片段 – How do I merge two arrays in JavaScript?
Spread operator The spread operator (…) was introduced in ES6 and can be used to merge two or more...
2022年10月4日
30秒学会 JavaScript 片段 – Array without last element
Returns all the elements of an array except the last one. Use Array.prototype.slice() to return all ...
2022年10月2日
30秒学会 JavaScript 片段 – Value frequencies
Creates an object with the unique values of an array as keys and their frequencies as the values. Us...
2022年10月2日
30秒学会 JavaScript 片段 – How can I detect if Caps Lock is on with JavaScript?
Oftentimes, especially when creating password inputs, you need to check if the Caps Lock key is on a...
2022年9月28日
30秒学会 JavaScript 片段 – What are JavaScript closures?
Closures are a JavaScript concept that comes up quite a lot, especially during interviews. While the...
2022年9月25日
30秒学会 JavaScript 片段 – How can I add minutes, hours or days to a JavaScript date?
You can’t get too far in web development without stumbling upon a situation where you have to ...