make = "Toyota"; }; } 除了上述的定义函数方法外,你也可以在运行时用 Function 构造函数从一个字符串创建一个函数,很像 eval() 函数。 当一个函数是一个对象的属性时,称之为方法。了解更多关于对象和方法的知识,请阅读使用对象。 调用函数 定义的函数并不会自动执行它。定义了函数仅仅是赋予函数以名称并...
Add an element to an arrayRemove the last element of an array - pop()Join all elements of an array into a string - join()Join two arrays - concat()Join three arrays - concat()Add an element to position 2 in an array - splice()Convert an array to a string - toString()Add new ...
string.uppercase.all('Chris Humboldt'); // Convert a string to uppercase const randomNumber = Rocket.random.integer(); // Generate a random integerMake sure not to overwrite the Rocket variable name to anything else within your project. Often a new reference will be made for the library ...
JavaScript provides two handy methods for converting strings to lowercase:toLowerCase()andtoLocaleLowerCase(). These methods make converting strings to lowercase easy to do. ThetoLowerCase()Method ThetoLowerCase()method in JavaScript converts all the uppercase characters in a string to lowercase char...
If you want to apply 🐊Putout transformations using putout/putout ESLint rule, enable 🐊Putout with the same called flag lowercased:const [source, places] = await eslint({ name: 'hello.js', code: `const t = 'hi'\n`, fix: true, putout: true, config: { extends: [ 'plugin:...
像 7 或'foo' 这样的原始值会使用相关的构造函数转换为对象,所以原始数值 7 会被转换为一个 Number 包装类,字符串 'foo' 会被转换为一个 String 包装类。 jsCopy to Clipboard function bar() { console.log(Object.prototype.toString.call(this)); } bar.call(7); // [object Number] bar.call("...
aCommandName: 一个 DOMString ,命令的名称。可用命令列表请参阅 命令 。 aShowDefaultUI: 一个 Boolean, 是否展示用户界面,一般为 false。Mozilla 没有实现。 aValueArgument: 一些命令(例如insertImage)需要额外的参数(insertImage需要提供插入image的url),默认为null。 总之浏览器能把大部分我们想到的富文本编辑器...
box by a user against a known string in your code. Because the user might include a variety of case variations in the entry, you need to guard against unorthodox entries by converting the input text to all uppercase or all lowercase letters for comparison (seeTesting Equality of Two Strings...
* @return {String} Returns a lowercase string representing the object's * constructor which is different from word 'object' if they are not custom. * @reference http://perfectionkills.com/instanceof-considered-harmful-or-how-to-write-a-robust-isarray/ * http://stackoverflow.co...
While some of the others are compact and elegant, here's a function that accounts for all the cases and allows several kinds of delimiters. //parse user entry and return time as [h:number, m: number], else null const parse = (entry: string | null): string | null => { ...