// Extract a portion of the string and store it in a new variable var sliceString = newString.slice(newString.indexOf("l")+2,newString.length); alert(sliceString); // The split function creates a new array containing each value separated by a space stringArray = concatString.split(" ...
// The split function creates a new array containing each value separated by a space stringArray = concatString.split(" "); for (var i=0; i<stringArray.length;i++) { alert(stringArray[i]; } alert(newString.toUpperCase()); alert(newString.toLowerCase()); } 下面是执行上面的代码得到...
or a string to value map.letbook = {// Objects are enclosed in curly braces.topic:"JavaScript",// The property "topic" has value "JavaScript."edition:7// The property "edition" has value 7};// The curly brace marks the end of the object.// Access the properties...
let now = new Date(); // The current time as a Date object. let ms = now.getTime(); // Convert to a millisecond timestamp. let iso = now.toISOString(); // Convert to a string in standard format. Date 类及其方法在 §11.4 中有详细介绍。但是我们将在 §3.9.3 中再次看到 Date 对...
_transform(chunk, encoding, callback) { if (typeof chunk !== "string") { callback(new Error("Expected a string but got a buffer")); return; } // Add the chunk to any previously incomplete line and break // everything into lines let lines = (this.incompleteLine + chunk).split("...
Use the `String.split()` method to split a string by newline, e.g. `str.split(/\r?\n/)`.
They are: match(), replace(), search(), and split(). MethodDescription exec() Executes a search for a match in a string and returns an array of information. It returns null on a mismatch. test() Tests for a match in a string and returns true or false. match() Returns an array ...
-- A button that reloads with no search string. Hidden until game ends. -->Play Again/*** An instance of this GameState class represents the internal state of* our number guessing game. The class defines static factory methods for* initializing the game state from different sources, a met...
To split a string into an array of characters, specify an empty string ("") as a separator.ExampleTry this code » let str = "INTERSTELLAR"; let strArr = str.split(""); document.write(strArr[0]); // Prints: I document.write(strArr[1]); // Prints: N document.write(strArr[...
一个程序可以通过调用process.exit()来强制退出。用户通常可以通过在运行程序的终端窗口中键入 Ctrl-C 来终止 Node 程序。程序可以通过注册一个信号处理程序函数process.on("SIGINT", ()=>{})来忽略 Ctrl-C。 如果程序中的代码抛出异常而没有catch子句捕获它,程序将打印堆栈跟踪并退出。由于 Node 的异步特性,发生...