23 return object != null && typeof object === 'object'; 24} 第13 行的 areObjects && !deepEqual(val1, val2) 一旦检查到的属性是对象,则递归调用将会开始验证嵌套对象是否也相等。 现在用 deepEquality() 比较具有嵌套对象的对象: 1const hero1 = { 2 name: 'Batman', 3 address: { 4 city: ...
深度比较函数能够正确地确定hero1和hero2是否具有相同的属性和值,包括嵌套对象hero1.address和hero2.address的相等性。 为了深入比较对象,我建议使用Node内置util模块的isDeepStrictEqual(object1, object2)或lodash库的_.isEqual(object1, object2)。 5. 总结 引用相等性(使用===、==或Object.is())用来确定操作...
deepEqual(val1, val2)指示一旦检查的属性是对象,则递归调用开始以验证嵌套对象是否也相等。 现在,我们使用deepEquality()来比较具有嵌套对象的对象: 深度相等函数正确地确定hero1并hero2具有相同的属性和值,包括嵌套对象hero1.address和的相等性hero2.address。 深入比较的对象,我建议使用isDeepStrictEqual(object1,对...
}functionisObject(object) {returnobject !=null&&typeofobject ==='object'; } 第13 行的 areObjects && !deepEqual(val1, val2) 一旦检查到的属性是对象,则递归调用将会开始验证嵌套对象是否也相等。 现在用 deepEquality() 比较具有嵌套对象的对象: consthero1= { name:'Batman', address: { city:'Got...
Another difference between the two methods is thatJSON.stringifydoes not serialize functions. jsonEqual({a:5,b:function(){}},{a:5});// true deepEqualwill instead check for reference equality between a function and its counterpart in the other object....
现在,让我们来看一个示例deepEquality(): 深度相等函数正确地确定hero1并hero2具有相同的属性和值,包括嵌套对象hero1.address和的相等性hero2.address。 为了深入比较对象,我建议使用: Node内置util模块的isDeepStrictEqual(object1,object2) 或_.isEqual(object1,Object2的)的lodash文库。 5.总结 的参考平等(使用...
if (typeof a != 'object' || typeof b != 'object') return false; // Assume equality for cyclic structures. The algorithm for detecting cyclic // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`. var length = aStack.length; while (length--) { // Linear ...
When discussing object comparisons in JavaScript, there are two types of equalities one must be aware of: Referential equality: Determines whether the two provided operands refer to the same reference/object instance. Deep equality: Determines whether objects are equal by comparing each property in th...
For a robust method of checking objects' "value equality" it is better to rely on a well-tested library that covers the various edge cases. Both Underscore and Lo-Dash have implementations named _.isEqual which handle deep object comparisons well. You can use them like this:...
[0].includes(-0);// 不能区分-0[0].find((val)=>Object.is(val,-0));// 能区分+0和-0 总结 最后来对比下四种算法的区别,区别如下表所示: 引用链接 [1]ECMAScript 规范:https://262.ecma-international.org/8.0/#sec-samevalue [2]JavaScript-Equality-Table:https://dorey.github.io/JavaScript-...