A piece of code that abstracts the factory pattern in the book JavaScript Design pattern: var VehicleFactory = function(subType, superType){ if(typeof VehicleFactory[superType] === function ){ function F(){}; F.prototype = new V...
the gitlab, environment is private, assuming that existing project A has two files A a.txt , A b.txt , and has a series of operations such as commit and merge. now a new project needs to be created due to business requirements, but the new project o...
y.addEventListener( change , function() { year = this.value month = month dayInWeek = new Date(year, month, 1).getDay() printDay() }) m.addEventListener( change , function() { year = year month = this.value dayInWeek = new Date(year...
npm WARN ajv-keywords@3.1.0 requires a peer of ajv@ ^ 6.0.0 but none is installed. You must install peer dependencies yourself. as mentioned above, npm gave such a warning when he created the vue project, what does this mean and how to solve it? ask the...
the author is developing Mini Program and uses web-view to call the web page to sign an agreement. you need to sign the agreement and tell Mini Program that the known web page cannot be transmitted through to Mini Program (the agreement page cannot be...
when Wechat has a QR code with parameters, QR_LIMIT_SCENE can generate up to 100, 000, so is there a limit on the number of QR_LIMIT_STR_SCENE? ...