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The JavaScript explanation: This example uses the reverse method of a JavaScript array (array), which reverses the contents of an array.In the example, the two variables a and AA are declared first, then a is an array and assigned to a, then the contents of the
This article illustrates the address transfer and value transfer usage of JavaScript arrays and PHP arrays. Share to everyone for your reference. Specifically as follows: The JavaScript array is the address pass/reference pass, while the PHP array is passed by the value The instance code is as follows: Copy Code
This article mainly introduces the array Summation Method of JavaScript learning notes. For more information, see Recommended reading:Add, delete, modify, and query the array of JavaScript learning notes Recently, I have learned more and more about the power and charm of JavaScrip
This article mainly introduces the address transfer and value transfer usage of javascript array and php array. The example analyzes the array usage skills of javascript and php, which has some reference value, for more information about how to transfer the address and value
pairs that can be understood as a JSON object Yarray.hash (["A", "B"],[1,2]); Yarray.indexof Returns the index value of the array in the same value as the value that you want to find. Yarray.indexof ([1,2],1) Yarray.numericsort Sorting arrays, from small to large [3, 1, 2].sort (Yarray.numericsort); Yarray.some Is there an element in the array that passes through the callback process? If there is, return
This article focuses on the way JavaScript inserts an array into another array, involving the use of the Array.prototype.push.apply method in JavaScript, which is very practical, and requires a friend to refer to the The example in this article describes how JavaScript ins
] = true; A[1] = document.getelementbyidx_x ("text"); A[2] = {x:11, y:22}; A[3] = new Array (); Arrays can be instantiated directly by assigning values, such as var a = new Array (1, 2, 3, 4, 5); var B = [1, 2, 3, 4, 5]; A and B are all arrays, except that B uses an implicit declaration to create another instance, and if alert (a==b) pops up false 1.2 Multi-dimensional arrays In fact
which types of parameters each API receives in the API's documentation. As in the above example, the Enable method receives the numbers and class array objects. The Add method receives strings, true arrays, and non-array objects. Tips Never overload a struct type that has overlapping other types When you overload a struct type with another type, test other types first Receive true arrays i
The class array object in JavaScript (Array-like object) refers to objects that look like arrays but are not arrays. The arguments variables and document.getElementsByTagName() return values in JavaScript are typical class array objects.Class
This article mainly introduces common JavaScript Array Operation Skills, and summarizes various common operation skills for Array search, connection, sorting, and iteration in the form of examples, which is of great practical value, for more information about how to use JavaScript arrays, see the examples in this artic
Examples of Array Usage Analysis and array instance analysis in Javascript This example describes how to use Array in Javascript. Share it with you for your reference. The specific analysis is as follows: The Array object in
The following is a summary of the JavaScript array method. I think this is quite good. I want to share it with you and give you a reference. Because I recently used freecodecamp to write code and used many JavaScript Array methods, therefore, I made a summary of the JavaScript
. 12 fun.call(null);// window or globalfun.call(undefined);// window or global This is explained in ECMAScript5.1 15.3.4.4, as followsIn strict mode, the situation is different, ES3 more tolerant as far as possible to speculate on the code intent. ES5 Strict mode (except IE6/7/8/9) is no longer speculative, any parameters passed to Call/apply are no longer converted. As follows 123456 ‘use strict‘functionfun() {alert(this);}fun.call(null)// nu
separator "separator". If it is omitted, it is separated by commas by default.Var a = [1, 2, 3, 4, 5]; Var B = a. join ("|"); // a: [1, 2, 3, 4, 5] B: "1 | 2 | 3 | 4 | 5" An array is an internal object provided by JavaScript. It is a standard set. We can add (push), delete (shift) elements, we can also traverse the elements in the for loop, so can we have other sets in addition to arrays in
This article mainly introduces the address transfer and value transfer usage of javascript Array and php array. The example analyzes the array usage skills of javascript and php, which has some reference value, for more information, see This article mainly introduces the ad
]; //DeleteConsole.log (Array13.splice (4));//[5,6,7,8]Console.log (ARRAY13);//[1,2,3,4]Console.log (Array13.splice);//[2,3]Console.log (ARRAY13);//[1,4] //InsertArray13.splice (1,0, "pomelo"); Console.log (ARRAY13); //[1, "Pomelo", 4] //Replace vararray14=[1,2,3,4,5]; Array14.splice (2,1, "pomelo");//[1, 2, "Pomelo", 4, 5]Console.log (ARRAY14)6.7 map () passes each element of the array that calls this function to the specified function:
);}namesColumn(‘张三‘,‘李四‘,‘王五‘);//["Names", Arguments[3]0: "张三"1: "李四"2: "王五"callee: namesColumn()length: 3Symbol(Symbol.iterator): values()__proto__: Object]Having the concat method treat a class array object as a real array, you need to convert the class array to a true array. Use Slice to convert a class
, it is separated by commas by default.Var a = [1, 2, 3, 4, 5];Var B = a. join ("|"); // a: [1, 2, 3, 4, 5] B: "1 | 2 | 3 | 4 | 5"An array is an internal object provided by JavaScript. It is a standard set. We can add (push), delete (shift) elements, we can also traverse the elements in the for loop, so can we have other sets in addition to arrays in JavaScript?B
In actual business scenarios, the maximum or minimum values in the array must be retrieved. However, arr. max () and arr. min () are not provided in the array. Can this method be implemented in other ways? So today, let's sort out some methods of the maximum and minimum values in the array. Let's take a look at them. Recommended reading:Add, delete, modify, and q
Random sorting of JavaScript learning notes array and javascript learning notes Recommended reading:Array Summation Method for JavaScript learning notes Add, delete, modify, and query the array of JavaScript learning notes The sor
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