值得注意的是,structured-clone 目前尚不支持包括:Blob、File、FileList、ImageBitmap、ImageData 和 ArrayBuffer,但已经支持类型化数组(Typed Arrays),但 u/int8、u/int16 和 u/int32 是目前唯一安全支持的。 可以通过下面的方式使用 structured-clone 的 polyfill: // 默认导出 import structuredClone from '@un...
}// 查表if(hash.has(obj))returnhash.get(obj)letisArray =Array.isArray(obj)letcloneObj = isArray ? [] : {}// 哈希表设值hash.set(obj, cloneObj)letresult =Object.keys(obj).map(key=>{return{ [key]:deepClone(obj[key], hash) } })returnObject.assign(cloneObj, ...result) } 这...
When in the object you know that a correct cloning operation for a specific array is just a shallow copy then you can call values.slice() instead of clone(values). For example in the above code I am explicitly requiring that a cloning of a polygon object will clone the points, but will...
original.self= original;constclone =awaitstructuredCloneAsync(original);// different objects:console.assert(original !== clone);console.assert(original.date!== clone.date);// cyclical:console.assert(original.self=== original);console.assert(clone.self=== clone);// equivalent values:console.assert...
var src, copyIsArray, copy, name, options, clone, target = arguments[0] || {}, i = 1, length = arguments.length, deep = false; // Handle a deep copy situation if ( typeof target === "boolean" ) { deep = target; // skip the boolean and the target ...
getTime()); } else if (Array.isArray(original)) { return original.map(deepClone); } else if (typeof original === 'object' && original !== null) { const clone = {}; Object.keys(original).forEach(k => { clone[k] = deepClone(original[k]); }); return clone; } return ...
{ "set": {}, "map": {}, "regex": {}, "deep": { "array": [ {} ] }, "error": {},} 同时，开发者还必须删除循环引用，因为 JSON.stringify 如果遇到则会抛出错误。因此，虽然该方法很强大，但可以使用 StructuredClone 做很多该方法无法做到的事情。4. 为什么不用_.cloneDe...
【js类型判断】包装类以及isArray,instanceof,typeof用法及原理 数组 /** * Initializes an array clone. * * @private * @param {Array} array The array to clone. * @returns {Array} Returns the initialized clone. */functioninitCloneArray(array){const{length}=arrayconstresult=newarray.constructor...
let b = Array.from(a) b.push(4) a // [1, 2, 3] b // [1, 2, 3, 4] 对象深拷贝 Object.assign() Object.assign(target, obj) 代码语言:txt 复制 let a = { name: 'krry' } let b = Object.assign({}, a) b.name = 'lily' ...
clone & cloneDeep(考虑各种对象) _.clone(value)创建一个 value 的浅拷贝。_.cloneDeep(value)创建一个 value 的深拷贝。 注意: 这个方法参考自 structured clone algorithm 以及支持 arrays、array buffers、 booleans、 date objects、maps、 numbers, Object objects, regexes, sets, strings, symbols, 以及 ...