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This article mainly introduces the basic method of string concatenation in JavaScript, which is the basic knowledge in JS learning. it is very simple for anyone who needs it, add two strings with one "+ ":
var longString = "One piece " + "plus one more piece.";
To accumulate multiple strings into one, you can also use the "+ =" operator:
var result =
The test code included in the book is as follows
Copy Code code as follows:
The results of the execution in firefox/3.0.3 are as follows:
Concatenation with plus:5 milliseconds
Concatenation with stringbuffer:10 milliseconds
The results of the implementation in IE6 are as follows:
Concatenation with plus:234 milliseconds
string concatenation in JS is often encountered, sometimes encountered long string stitching will be more trouble. such as HTML strings;
The code is as follows
Copy Code
var str = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";var str = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
The
Article Introduction: JS Built-in features one: string concatenation.
JS built-in features one: string connection;
If the plus (+) operator is used for numbers, the addition of two numbers is added;
However, by acting on a string, it means that the string is conne
Connection of Strings
One, the most commonly used =
Always said that this way of efficiency is the lowest, why? You can look at the real process of this approach.
var str = "Hello";
str = "World";
(1) Create a string that stores "Hello".
(2) Create a string that stores "world".
(3) Create a string that stores the result of the connection.
(4) Copy the current co
Reference Link: http://tutorials.jenkov.com/java/strings.html
Often see on the net or around hear someone say string concatenation does not add directly with string, StringBuilder efficiency is higher than string concatenation. Others often say that StringBuffer is synchrono
Sample Code of vue syntax concatenation string and sample code of vue concatenation
This article describes the sample code of the vue syntax concatenation string and shares it with you as follows.
Let's start with a line of code:
As shown in the code, you only need to splic
.2. String constant pool in method area3.String str = "Hello"; At this point, 1 objects are created, referencing Str to the objects in the constant poolCheck that the constant pool has no hello, and if so, point to the object, and if not, create the object in the constant pool.4.intern () method. To turn a string into a str
, the string object returned by the Intern () method is definitely the object in the pool and the contents of the string are the same as the contents of the object that called the method. It is not difficult to understand that the result is false true. The object returned by Str3.intern () and Str1.intern () is the object that str2 points to. So our conclusions are also verified.In addition to the case of
) string s (chars,chars_len)//C string before chars _len characters as the initial value of a string s. G) string s (num,c)//Generate a string containing num C characters H) string s (beg,end)//with interval beg;end (does not
Today, there is a very interesting thing, because I need to use JS to achieve multi-language, I am in the JS file defined a different variable, try to use a variable concatenation string to make a defined variable name, the result stitching, the display is a string, not a variable, so cannot parsezh_test = ' Hello '; tw_test = ' Hello '; En_test = ' Hello '
Python String concatenation, truncation and Replacement Methods Summary analysis, python string
This document describes how to splice, intercept, and replace Python strings. We will share this with you for your reference. The details are as follows:
Python string connection
There are several methods to connect python s
to intercept a string; string concatenation; dynamically loop to add elements:Get Current button:{data:NULL, Render:function(data, type, row) {varLoginName = $ ("#loginName"). Val (); vardiv = $ ("); varButton1 = $ ("); varButton2 = $ ("); if(row[4]!=loginnamerow[6]== ' 1 ') {//rolled up but not a person who is a total user cannot downloadButton1.attr ("Disabled"
/* NSString Two strings * str1 = @ "123"; NSString * str2 = @ "abc"; Stitching into a full string. */#import /* Append to the string @ "Price:"? An arbitrary floating-point number that is entered from the terminal, generates a new string. Two-bit decimal is required. */#import Copyright NOTICE: This article for Bo Master original article, without Bo Master permi
Town Field Poem:Cheng listens to the Tathagata language, the world name and benefit of Dayton. Be willing to do the Tibetan apostles, the broad show is by Sanfu mention.I would like to do what I learned, to achieve a conscience blog. May all the Yimeimei, reproduce the wisdom of the body.——————————————————————————————————————————Codehello= ' Hello hello ' world= ' world ' Print (Hello+world)Result——————————————————————————————————————————The essence of the blog, in the technical part, more in th
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