JS string concatenation has two kinds: with "+" connection, with the join of the array connection.
The code is as follows
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var a1=10;var a2=20;a3 = A1 + a2/Digital plus numberAlert (typeof (A3))//numberAlert ("a1
Absolutely original. indicate the source when reprinting,
Http://blog.csdn.net/izard999/article/details/6708433thank you!
There are a lot of string analysis on the Internet, so I will not bother to talk about other string knowledge!
This article
As A. net developer, we all know the efficiency gap between String concatenation and StringBuilder in C. During development, you will also pay attention to using StringBuilder instead of the common String concatenation method. However, most
During development, you will also pay attention to using stringbuilder instead of the common String concatenation method. However, most developers may ignore this efficiency issue in Js.
Let's take a performance test and talk about it with facts!
During development, you will also pay attention to using StringBuilder instead of the common String concatenation method. However, most developers may ignore this efficiency issue in js.Let's take a performance test and talk about it with facts!Copy
Tips for Javascript String concatenation (recommended): javascript string
In Javascript, you will often encounter character strings, but it is troublesome to concatenate a character string that is too long.
If it is in a row, the readability is poor.
First, IntroductionThe code to create a string using NSString is as follows:#import int main (int argc, char *argv[]){Nsautoreleasepool*pool=[[nsautoreleasepool Alloc]init];NSString *[email protected] "programming is fun";NSLog (@ "%@", str);[Pool
C + + enhanced support for strings, in addition to the use of strings in C, and the use of built-in data types string,string class processing strings can go through a lot, replacing the char array and the char pointer in the C language completely.
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