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The examples in this article summarize common methods for array (array) objects and string objects in JavaScript. Share to everyone for your reference, specific as follows:
Summary: The author often confuse the method of array and the method of
Comparison of array and string methods in javascript, javascript Array
Previous
Strings have many similarities with arrays. They have many methods and have a high similarity. However, they differ that strings are immutable values, so they can be viewed as read-only arrays. T
the string and returns an array that can receive one or two parameters. The first parameter represents a separator, which can be a string or a regular expression. The second parameter indicates the length of the returned string.
5. Others
String comparison method: local
1 //--------------------Array to string---------------------------2 3 //you need to concatenate an array element with a character into a string4 varA1, B1,c1;5A1 = ["A", "B", "C", "D", "E"];6B1 = A1.join ('-');//a-b-c-d-e using-stitching array elements7C1 = A1.join (");//ABCDE8 9 Ten //-----------------
Array is inherited from object. It has all the functions and properties of object. Here is the case of object:NEW: var object = new Object ();Add: object[strindex] = value; (Strindex to String)Delete: delete Object[strindex];Traversal: for (var strobjindex in object) Object[strobjindex];As follows:
Copy Code code as follows:
var obj = new Object ();
Obj["a" = "my";
Obj["Second"] = "name
Array is inherited from the Object. It has all the functions and features of the Object. The following describes the situation of objects:New: var object = new Object ();Added: object [strIndex] = value; (strIndex is string)Delete: delete object [strIndex];Traversal: for (var strObjIndex in object) object [strObjIndex];As follows:
Copy codeThe Code is as follows:Var obj = new Object ();Obj ["first"] = "my "
The Join ("") method of JavaScript, which turns the array into a uniform string used to write long argument stringsfunction m (a) { var b = ["B.push ("Return B.join ("")}[13 Migration]javascript Join ("") method, the array into a uniform
This article briefly introduces the strings and arrays in javascript, which are basic knowledge. To learn javascript well, you must understand these two points.
JavaScript string
A string is a collection of characters, including English letters, punctuation marks, special c
This article describes how to implement mutual conversion between Array and String in Javascript, and describes how to use the toString and split Methods in JavaScript, for more information about how to convert Array and String in
/*** Background: I found that my colleagues like to use a template (String. replace) to spell JS strings. That's right. Using a template increases readability,* Compared with the efficient Array. push and then Array. join ("") concatenate strings, replace can be a problem.* For example, the number of loops is 1000. The gap in ie is large, and the
The following code has a good idea without considering the running efficiency. But in actual applications, we still use split or join to implement Array Operations. Two custom js functions that implement mutual conversion between strings and arrays hope to be useful to you:
The Code is as follows:
Function StringToArray (str, substr ){/* Function: Splits a string into an
This article mainly introduces how to use JavaScript to connect all elements in an array into a string. It involves the technique of using the join method in javascript to convert arrays, which is of great practical value, for more information about how to use JavaScript to
An example of JavaScript recursion to implement reverse array string, javascript Recursion
Use JavaScript to sort string arrays.
/*** Sort@ Param opt: String
strings and arrays are common types in program writing, so program languages use string and array as basic types and provide many strings and arrays of methods to simplify manipulation of strings. JavaScript also provides string types and array types, and there are many basi
This article mainly introduces how to implement prototype extension in JavaScript. Examples of JavaScript prototype extension related skills for strings, dates, arrays, etc, for more information about how to implement prototype extension in js, see the example in this article. We will share this with you for your reference. The details are as follows:
String. p
When some front-end controls need to submit data to the server for data verification, they need to determine whether the submitted data is empty. For string data of a common form, you only need to judge the length after trim, and the data needed here can be of different types, through JSON. when stringify (data) is serialized before being passed, sometimes we encounter this situation: when some front-end controls need to submit data to the server for
Strings and arrays are commonly used in programming. Therefore, the programming language uses String and Array as the basic types, it also provides many string and array methods to simplify string operations. JavaScript also provi
Strings and arrays are commonly used in programming. Therefore, the programming language uses String and Array as the basic types, it also provides many string and array methods to simplify string operations. JavaScript also provi
JavaScript learning"Arrays in JS"1, the concept of arrays: The order in which the elements of the structure of an ordered element are sequentially stored in memory is called subscript, and the object element is looked up by subscript.2, the declaration of the Array: ① literal declaration: var arr1 = [];js, the same array, can store many different data types: for
String and array as JavaScript built-in objects, many of the methods, whether in the development process, or at the time of the interview have the opportunity to be asked by the interviewer, here is a frequently used method to do an introduction, these methods have a lot of practical application scenarios, So the mastery of them is still very necessary.1. What ar
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