append

问题 So I have this: jQuery("document").ready(function($){ var nav = $('#nav'); var logo = '<img src="img/logo.png" />'; $(window).scroll(function () { if ($(this).scrollTop() > 136) { nav.addClass("nav-f"); nav.append(logo); } else { nav.removeClass("nav-f"); nav.remove(logo); } }); }); When scrolling I'm trying to make the navigation to be fixed, which works, but I also want to add a tag with the logo image in the #nav div, which also works but it appends on every scroll so when scrolling I get

问题 I need to append data to my BLOB field, how can I do this using an UPDATE command? What i am asking is; is it possible to concatenate blob data so that i can eventually set it to a field like UPDATE BLOB_table SET BLOB_field = BLOB_field + BLOB_data I tried using DBMS_LOB.APPEND but it does not return a value; so i created a function which gives me an error of "invalid LOB locator specified" CREATE OR REPLACE FUNCTION MAKESS.CONCAT_BLOB(A in BLOB,B in BLOB) RETURN BLOB IS C BLOB; BEGIN DBMS

问题 I have this simple code: import "fmt" type Foo struct { val int } func main() { var a = make([]*Foo, 1) a[0] = &Foo{0} var b = [3]Foo{Foo{1}, Foo{2}, Foo{3}} for _, e := range b { a = append(a, &e) } for _, e := range a { fmt.Printf("%v ", *e) } } I was expecting it to print {0} {1} {2} {3} , however it prints {0} {3} {3} {3} . What happened here? 回答1: This is because in the for loop you operate with a copy and not with the slice/array element itself. The for ... range makes a copy of the

问题 I have a comment system in which I want to realize inline-editing (when someone knows a good plugin or something similar please don't hesitate to give me a name) and found a Javascript snippet which replaces the text with a textarea and the text as the value of that textarea. But now I need to add a button (submit button) to that textarea so that the user could save the text he edited. My code looks now like <span id="name">comment</span> <div onclick="replacetext();">test</div> <script type=

问题 Rather than appending to the end of a file, I am trying to append to the end of a certain line of a .csv file. I want to do this when the user enters an input that matches the first column of the .csv. Here's an example: file=open("class"+classno+".csv", "r+") writer=csv.writer(file) data=csv.reader(file) for row in data: if input == row[0]: (APPEND variable TO ROW) file.close() Is there a way to do this? Would I have to redefine and then rewrite the file? 回答1: You can read the whole file

问题 Can someone explain me what is wrong with this statement. var someString = "Welcome" someString.append("!") However this works when I replace the code with, var someString = "Welcome" let exclamationMark : Character = "!" someString.append(exclamationMark) Thanks in advance 回答1: In Swift, there is no character literal (such as 'c' in C-derived languages), there are only String literals. Then, you have two functions defined on String s: append , to append a single character, and extend , to

问题 Table Definitions Table 1 (horizontal) This is a table of users | id | name | phone | --------------------- | 1 | Bob | 800 | | 2 | Phil | 800 | Table 2 (Vertical Table) This is a table of teams | id | name | ------------------ | 1 | Donkey | | 2 | Cat | Table 3 (Vertical Table) This table is connecting the first two | id | user_id | team_id | -------------------------- | 1 | 1 | 1 | | 2 | 1 | 2 | | 3 | 2 | 1 | My Goal I would like to be able to query the data in such a way that i get the

问题 I'm using jQuery and trying to append both an element and some text to an existing div element. However, when I try this $('<img src="/img.png" />').appendTo(gMenuItemInnerDiv); $(gMenuItemInnerDiv).text(name); The img element from the first line is wiped out. How can I get both things into my div? 回答1: var gMenuItemInnerDiv = $('#something'); var name = "<b>Yay</b>"; $('<img src="/img.png" />').appendTo(gMenuItemInnerDiv); gMenuItemInnerDiv.append( document.createTextNode(name) ); <script

问题 I have a lengthy function called run below that contains a few instances of appending data. from multiprocessing import Process data = [] def run(): global data ... data.append(trace) ... if __name__ == '__main__': jobs = [] gen_count = 0 leaked_count = 0 system_count = 0 N = 100 for i in range(N): p = Process(target=run) jobs.append(p) p.start() However, using multiprocessing no data is appended. In addition, the function run returns several values that need to be added to gen_count , leaked

问题 The data variable is a 3x9 array, where the first row is voltage, the second row is counts, and the third row is error. I want to average the counts/errors at each voltage so that the processed array is something like combined = [1,2,3;.99,.1.2,1.3;.2,.3,.5] My attempt so far is: data = [1,1,1,2,2,2,3,3,3;... .98,.99,.98,1.1,1.2,1.2,1.3,1.3,1.4;... .3,.2,.2,.3,.3,.4,.5,.4,.5]; volt = data(1,:); v_uniq=unique(volt);%Array of unique voltage values for k=1:length(v_uniq) volt_i=find(volt==v_uniq