javascript - How to implement multiselect in Vue -


i trying mimic spreadsheet feature can select multiple table cells pressing shift + mouseover, , having trouble getting select nearby cells fall within start , end range of selection. example, 3x3 grid, cell 0,0 start cell, when mouseover 0,1, , 1,1 1,0 should selected falls within range. here logic have far, selects cells mouse passes on (non of adjacent cells selected).

here code:

 selectcell (row, col) {   this.coors.push({x: row, y: col})   let len = this.coors.length - 1   this.start = {x: this.coors[0].x, y: this.coors[0].y}   this.end = {x: this.coors[len].x, y: this.coors[len].y}   this.grid[row].splice(col, 1, 2)   this.iterateovergrid(2) }, iterateovergrid (col) {   (let = this.start.x; <= this.end.x; i++) {     this.grid[i].splice(this.end.y, 1, col)     (let j = this.start.y; j <= this.end.y; j++) {       this.grid[i].splice(this.end.y, 1, col)     }   } },

start holds x , y position of first cell selected; end holds x , y position of last cell selected. idea iterate on each row , column in grid (which attempting in iterateovergrid() method) , assign value of 2 each cell falls within start end parameter. how can achieve this?


Comments

Post a Comment

Popular posts from this blog

PHP and MySQL WP -

i trying accomplish 2 things here code. writing php directly wp page using insert php plugin. 1) query mysql database , return results 1 column 4 columns. 2) make each result own hyperlink directs user new wp page runs new query on page. i able query show results , turn results dynamic hyperlink, cannot formatting down. right returns result 1 column. here have: [insert_php] $servername = "localhost"; $username = "login"; //edited privacy $password = "password"; //edited privacy $database = "database"; //edited privacy // create connection $conn = new mysqli($servername, $username, $password, $database); // check connection if ($conn->connect_error) { die("connection failed: " . $conn->connect_error); } echo "connected successfully"; //get results database $result = mysqli_query($conn,"select mine mines order mine"); $all_property = array(); //declare array saving property //showing proper...
Read more

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

nginx - phpPgAdmin - log in works but I have to login again after clicking on any links -

i have setup postgres 9.6 , phppgadmin on centos 7 server nginx, i can log in phppgadmin, postgresql server on right of page remains crossed out , link try browse (databases, roles etc) requires log in again. i'm thinking seems sessions problem, unsure how resolve it. any pointers on how fix or should looking @ in order track down problem? solved. turns out owner of /var/lib/php/session apache - needed nginx. sorted changing ownership nginx below: chown -r nginx:nginx /var/lib/php/session/
Read more