javascript - Extract matched text and its neighboring context n words upstream n words downstream (nth occurrence from left and nth occurrence from right) -


i need text fits nicely in autocomplete dropdown. required more strategy appear. using hidden text or fadeout option didn't work because matched text string outside of visible frame of context. ellipsis approach bit heavier weight need. "show more" works well, not in context of dropdown box; don't want user worry except selection of option. want line or 2 of context centred around matched token. there related answers, nothing quite addresses need both n right , n left.

var haystack = "r4 r3 r2 r1 needle r1 r2 r3"; var needle = "needle"; var delim = " "; var numwords = 5; var trimmedtext = trimtoneighboringtext(haystack, needle, numwords, delim);  console.log("with " + numwords + " neighboring words: \"" + trimmedtext + "\"");

regex can simplify lot!
here solution:

var haystack = "l5 l4 l3 l2 l1 needle r1 r2 r3 r4 r5 r6",     needle = "needle",     numwords = 3;  var result = haystack.match("(?:\\s?(?:[\\w]+)\\s?){"+numwords+"}"+needle+"(?:\\s?(?:[\\w]+)\\s?){"+numwords+"}");  console.log("with " + numwords + " neighboring words: \"" + result[0] + "\"");

with 3 neighboring words: " l3 l2 l1 needle r1 r2 r3 "


Comments

Post a Comment

Popular posts from this blog

How to connect android app to App engine -

i'm trying connect app in android server i've opened on appengine. my server's name : dddd-daniel-2345 , website server : http://dddd-daniel-2345.appspot.com/ this how connect android app server in app engine: app.yaml: application: dddd-daniel-2345 version: 1 runtime: python27 api_version: 1 threadsafe: yes handlers: - url: .* script: main.app libraries: - name: webapp2 version: "2.5.2" main.py: #!/usr/bin/env python # # copyright 2007 google inc. google.appengine.api import users import webapp2 class userhandler(webapp2.requesthandler): def get(self): user = users.get_current_user() if user: greeting = ('%s,%s,%s' % (user.email(),user.user_id(),user.nickname())) else: greeting = ('not logged in') self.response.out.write(greeting) app = webapp2.wsgiapplication([('/', userhandler),], debug=true) my applications code : add manifast main....
Read more

gcc - MinGW's ld cannot perform PE operations on non PE output file -

i know there other similar questions out there, stackoverflow or not. i've researched lot this, , still didn't find single solution. i'm doing operative system side project. i've been doing in assembly, wanna join c code. test, made assembly code file (called test.asm): [bits 32] global _a section .text _a: jmp $ then made c file (called main.c): extern void a(void); int main(void) { a(); } to link, used file (called make.bat): "c:\mingw\bin\gcc.exe" -ffreestanding -c -o c.o main.c nasm -f coff -o asm.o test.asm "c:\mingw\bin\ld.exe" -ttext 0x100000 --oformat binary -o out.bin c.o asm.o pause i've been researching ages, , i'm still struggling find answer. hope won't flagged duplicate. acknowledge existence of similar questions, have different answers, , none work me. question: what doing wrong? old mingw versions had problem "ld" not able create non-pe files @ all. maybe current versions...
Read more

php - display validation error message next to the textbox in codeigniter -

Image
i'm newbie codeigniter.i want display error message next text box.my view file create.php contains following code. <?php echo validation_errors(); //validation echo form_open('news/create'); //create form ?> <div class="boxes"> <div class="common"> <div class="lables"> <label for="name">name</label> </div> <div class="text_boxes"> <input type="text" name="uname" /><div id="infomessage"><?php echo $message;?></br> </div> </div>` and below controller model: public function create() { $this->load->helper('form'); $this->load->library('form_validation'); $data['title'] = 'insert items'; $this->form_validation->set_rules('uname','required|min_length[6]|m...
Read more