echo repeat

First Photo:Second picture/*** This method is to go to heavy, so-called deduplication is because the echo to select the value is attached and set to selected the selected state, and when we initialize all the Select Add Option element in the Echo

Copy Code code as follows: @echo off :: Objective: :: SearchNet.TXT only one number per line, counting the number of repetitions per count, and according to the number of repetitions from high to low sort :: Ideas: :: Sort all the numbers

1. 1. Command and code echo12. command significance * iacwillecho command sending...2. Normally, the connection is bidirectional, and the data stream in one direction has nothing to do with the data stream in another aspect...3. The Echo Option

If syntax:if [expression]ThenCommandselif [Expression2]ThenCommandsElseCommandsFiCase Syntax: Case string1 inSTR1)commands;;STR2)commands;;*)Commans;;EsacLoop statement for syntax: for Var in listDoCommands done  In this form, for each item in the

Redirection, environment variables, and Shell functions of advanced shell script Programming Shell is not limited to simply executing commands line by line. One of the more powerful functions is the ability to create functions and function

In the more complex web program development, due to the use of object-oriented data manipulation, or business logic is too complex, developers in the development process, often unconsciously read data repeatedly. Like what: $result 1 =

JS in the case of delay loading, most can not be separated from the two situations, namely the external JS file delay loading, as well as the delayed loading of web images:1. First of all, briefly describe the JS file of the 3 kinds of lazy loading

Php horizontal repeat area display method 2. Method 1. note that there is a pre-defined Image record set rsmpic that needs to be repeated horizontally. please change it to your record set name based on your situation. neatly place the repeated

Pre-used JS form to prevent duplicate submission method The code is as follows Copy Code The following three methods are called separately so if I make a form directly, and then submit it to/test, the above

PHP prevents forms from repeating the submission method It is a tricky problem for users to submit a form because of the speed of the network, or if the webpage is maliciously flushed, causing the same record to be repeatedly inserted into the