append | 易学教程

append new rows and input tags using jQuery

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问题 I have a web application that has set to navigate its input fields using Enter key too. In addition, I have a control in my forms that appends new rows to a table that contains my input fields. <select name="more" id="more" style="width:50px"> <option value="0">0</option> <option value="5">5</option> <option value="10">10</option> <option value="20">20</option> </select> And this what I used for appending new rows containing input fields. $('#more').change(function(e) { var current_rows = ($(

How can i give a limit to an append function with javascript?

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问题 I have an append button which appends endlessly if you click it endlessly. Lets say i want this button to do this 10 times. Let me tell you in fantasy code :p what i was thinking so that i can learn from my mistakes; ( i know its wrong but hey im learning) thismany = 1; appendbutton.onClick = "thismany = +1"; if{ thismany = <9} appendbutton.onClick = disabled thanks in advance 回答1: (function(){ var count = 1; document.getElementById("the_node_id").onclick = function(){ if(count > 10){ return;

AWK if length statement append

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问题 I am trying to fix a problem of missing data in a csv file. The column, that should be null, is lacking a double field separator to maintain the csv structure. The example below illustrates what I mean: 1@Sunshine@2/M@L@JRVel@215@WAW 2@Pass@2/J@L1@JAvar@218@JKDes 3@Solo@2/K@JRosa@218@WAW 4@Bomber@2/D@L1@JLOrt@218@GCCon 5@SmokingCandy@2/Y@L1@MFco@218@SMAs 6@BigBound@2/H@L1@JCast@218@SMAs 7@ShootBunies@2/H@L@DLPar@218@DKo As you can see, in the third row, fourth column, there is no "L" or "L1",

Appending to a new list for every loop

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问题 I am running a for loop and appending a value into a list for every file run in loop. When I use append(), during the second run through the for loop it appends the new values into the same list as in the first run through loop. Is there a way to append and create a new list everytime it runs through loop? phaseresult_i =[] for i in range(len(folder)): data = np.loadtxt(dir + folder[i]) time = data[:,0]-2450000 magnitude = data[:,1] print ('File:', folder[i],'\n','Time:',time,'\n', 'Magnitude

Go文件内容追加问题

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今天在用文件追加时，遇到点小问题，一直没法追加，起初是这样的 fp,err1 = os.OpenFile(filename,os.O_APPEND,0666) 上面这个死活加不了，后面改成 fp,err1 = os.OpenFile(filename,os.O_WRONLY| os.O_APPEND,0666) 就是加上O_WRONLY这个就行了，不知道为啥，凡正能追加了。完全代码如下 func writeUrl(urlList []string){ if len(urlList) == 0 { return } var filename = "jump_url.txt" var fp *os.File var err1 error defer fp.Close() if t,_ := PathExists(filename); !t{ fp,err1 = os.Create(filename) } else { fp,err1 = os.OpenFile(filename,os.O_WRONLY| os.O_APPEND,0666) } if err1 != nil { fmt.Println("文件操作失败", err1) } writer :=bufio.NewWriter(fp) for _,u := range urlList{ n, err :=writer

How do I refer to an appended item in jQuery?

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问题 I want to create and append an item in jquery, while saving a reference to it. var buy = "<img src='img/buy-now.png' />"; var $buy = $(buy).appendTo("body"); $buy.html("hello"); I was expecting something like the above to work. Any ideas? 回答1: In short, $buy is the object you've appended, you're just doing an invalid operation. <img /> is a self-closing tag, there is no HTML inside it, so .html("something") will have no effect. If you meant to set the tooltip, use .attr(), like this: $buy

htaccess Redirect if query string variable present

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问题 I need to add style=2 to all urls within a directory ONLY if the url does NOT already contain style=2 . Within the directory root, I have an .htaccess with the following: RewriteCond %{QUERY_STRING} !(?style=|&style=) RewriteRule ^(.*)$ %1&style=2? [R=301,QSA] I know it's wrong. Can anyone help? 回答1: Change your code to this to make it work: RewriteCond %{QUERY_STRING} !(^|&)style=2(&|$) [NC] RewriteRule ^ %{REQUEST_URI}?style=2 [R=301,L,QSA] 回答2: Try this : RewriteCond %{QUERY_STRING} !^(.*&

SQL append distinct values from two columns and two tables

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问题 I'm trying to create SQL code that takes the distinct values from two columns and “appends” them. By that, I mean that that the following table: Account Article ----------------- 1 1 1 2 2 3 Should produce the following result: Account Article ----------------- 1 1 1 2 1 3 2 1 2 2 2 3 I'm doing this from two tables using a union, so the idea is to get all combination of all unique account numbers in both tables with all unique article numbers in both tables. And I want a clause that limits

vb6 Open File For Append issue Path Not Found

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问题 Open App.Path & "\Folder\" & str(0) For Output Seems to get a path not found however if directly before that I do MsgBox App.Path & "\Folder\" & str(0) It Provides the correct directory/filename that I want and if I replace that string with the direct path in quotes it works fine however that won't be very good for other users of my app :( Anyone know why this doesn't work? 回答1: You can open a file that doesn't exist. I tried it with: Open "c:\temp\test.txt" & Str(0) For Output As #1 Close #1

Append string to existing textfile in IronScheme

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问题 We are trying to construct a log file using IronScheme, and we have written a code for it using racket. It works fine in racket, but IronScheme throws an error. This is what we have so far: (define write-to-log (lambda(whatToWrite) (with-output-to-file "robot-log.txt" (lambda () (printf (string-append whatToWrite "\r\n" ))) #:exists 'append))) See how we use the "exists" optional parameter when using with-output-to-file. We are not sure how to make this optional parameter work with IronScheme