30秒学会 JavaScript 片段 – head
Returns the head of a list. Check if arr is truthy and has a length property, use arr[0] if possible...
Returns the head of a list. Check if arr is truthy and has a length property, use arr[0] if possible...
Converts an angle from radians to degrees. Use Math.PI and the radian to degree formula to convert t...
Renders a slider element that uses a callback function to pass its value to the parent component. Us...
Returns the symmetric difference between two iterables, without filtering out duplicate values. Crea...
Returns the transpose of a two-dimensional list. Use *lst to get the passed list as tuples. Use zip(...
Clamps $num within the inclusive range specified by the boundary values $a and $b. If $num falls wit...
Similar to how you can two-way bind [(ngModel)] you can two-way bind custom property on a component,...
It’s really easy to add keyboard shortcuts in the template: <textarea (keydown.ctrl.enter)=...
Returns the difference between two collections, after applying the provided function to each element...
Checks if a string is upper case. Convert the given string to upper case, using String.prototype.toU...