1.扩展运算符,该运算符主要用于函数调用。 function push(array, ...items) { array.push(...items); } function add(x, y) {returnx +y; }const
// expected output: Array ["broccoli", "cauliflower", "cabbage"] 2.shift(): 与push()方法配合使用可以构成先进先出的队列,该方法可删除数组第一项并返回该项。 1 2 3 4 5 6 7 8 9 const array1 = [1, 2, 3]; const firstElement = array1.shift(); console.log(array1); // expected ...
行{4} eventTargetAgnosticAddListener 是对事件注册监听器,里面还是用的事件触发器对象的 on() 方法 emitter.on(name, listener) 。 行{5} addErrorHandlerIfEventEmitter 判断事件名如果不等于 'error' 同时注册一个 error 事件的监听器,具体实现同行 {4}。 行{6} eventHandler() 函数就是上面注册的监听器函...
reserved (default: [])— Pass an array of identifiers that should be excluded from mangling. Example: ["foo", "bar"]. toplevel (default: false)— Pass true to mangle names declared in the top level scope. Examples: // test.js var globalVar; function funcName(firstLongName, anotherLong...
array.flat(n)是es10嵌入层叠的api,n表示尺寸,n变化infinity时维度为无限大 2.开始篇 function flatten ( arr ) { while (arr.some( item => array .isarray(item))) { arr = [].concat(...arr); } return arr; } flatten([ 1 ,[ 2 , 3 ]]...
var buffer = new ArrayBuffer(32768); var HEAP8 = new Int8Array(buffer); function compiledCode(ptr) { HEAP[ptr] = 12; return HEAP[ptr + 4]; } 如果涉及到指针,也是一样处理。 size_t strlen(char *ptr) { char *curr = ptr; while (*curr != 0) { curr++; } return (curr - ptr)...
This includes things like window.Array, window.Promise, etc. It also, notably, includes window.eval, which allows running scripts, but with the jsdom window as the global: const dom = new JSDOM(` document.getElementById("content").append(document.createElement("hr")); `, { runScripts:...
context[@"globalFunc"] = ^() {NSArray*args = [JSContext currentArguments];for(idobjinargs) {NSLog(@"拿到了参数:%@", obj); } }; context[@"globalProp"] =@"全局变量字符串"; [context evaluateScript:@"globalFunc(globalProp)"];//console输出:“拿到了参数:全局变量字符串” ...
add(labelMarkers) 将labelMarker 添加到标注层上 参数说明: labelMarkers (Array<LabelMarker>) 可添加单个标注或标注数组 remove(labelMarkers) 将labelMarker 从标注层上移除 参数说明: labelMarkers ((LabelMarker | Array<LabelMarker>)) 可移除单个标注或标注数组 clear() 清空标注层上的标注 show() ...
enabledTransports(Array) Specifies which transports should be used by pusher-js to establish a connection. Useful for applications running in controlled, well-behaving environments. Available transports for web:ws,wss,xhr_streaming,xhr_polling,sockjs. If you specify your transports in this way, you ...