javascript - Why won't my comparison array work? -


i building game want take player inputs prompts for, , compare them inputs have used, , reject choice if choose same thing twice. here relevant code:

var playerchoicerow = 0; var playerchoicecolumn = 0; var playerattackarray = [];  function playerattack(playerchoicerow,playerchoicecolumn) { (var i=0; i<playerattackarray.length; i++){     if ([playerchoicerow,playerchoicecolumn] === playerattackarray[i]){         alert("you have attacked space, please choose another.");         playerchoicerow = prompt("please choose number between 0 , 5.");         playerchoicecolumn = prompt("please choose number between 0 , 5.");     } } if (playerchoicerow === undefined){     alert("please choose number between 0 , 5!");     playerchoicerow = prompt("please choose number between 0 , 5."); } if (playerchoicecolumn === undefined){     alert("please choose number between 0 , 5!");     playerchoicecolumn = prompt("please choose number between 0 , 5."); } playerattackarray.push([playerchoicerow,playerchoicecolumn]);  while (playercounter || computercounter <=4){     var playerchoicerow = prompt("please select row of attack. (0 though 5)")-'';     var playerchoicecolumn = prompt("please select column of attack. (0 though 5)")-'';     playerattack(playerchoicerow,playerchoicecolumn);     if (playercounter == 5){         alert("you have sunk enemy boats!");         break;     } }

in javascript array comparison identity, not content; in other words === between 2 expressions when they're arrays returns true if referring same array object, not if they're 2 arrays containing same things.

you work around problem converting both sides strings first:

if (""+[playerchoicerow,playerchoicecolumn] === ""+playerattackarray[i]) ...

-

Comments

Post a Comment

Popular posts from this blog

c# - Binding a comma separated list to a List<int> in asp.net web api -

the default binder in web api expecst http://url.com/webapi/report/?pageids=3243&pageids=2365 to bind public ihttpactionresult report(list<int> pageids){ // exciting webapi code} i wish bind http://url.com/webapi/report/?pageids=3243,2365 as running out of space in url get . i have created class public class commaseparatedmodelbinder : system.web.http.modelbinding.imodelbinder { public bool bindmodel(httpactioncontext actioncontext, modelbindingcontext bindingcontext) { //binding in here } } and registered in webapiconfig.cs var provider = new simplemodelbinderprovider( typeof(list<int>), new commaseparatedmodelbinder()); config.services.insert(typeof(modelbinderprovider), 0, provider); i have altered method signature use model binder so public ihttpactionresult report( [modelbinder] list<int> pageids){ // exciting webapi code} however break point in binder not being ...
Read more

how to prompt save As Box in Excel Interlop c# MVC 4 -

i want export excel sheet using excel interloop... i have datatable convert excel sheet... now there way save file using save dialogue box in mvc 4 here code public string datatabletoexcel(datatable dt, string htmlheading, string key) { try { microsoft.office.interop.excel.application excel; microsoft.office.interop.excel.workbook excelworkbook; microsoft.office.interop.excel.worksheet excelsheet; microsoft.office.interop.excel.range excelcellrange; excel = new microsoft.office.interop.excel.application(); excel.visible = false; excel.displayalerts = false; excelworkbook = excel.workbooks.add(type.missing); excelsheet = (microsoft.office.interop.excel.worksheet)excelworkbook.activesheet; excelsheet.name = "sheet1"; dataset ...
Read more

xslt 1.0 - How to access or retrieve mets content of an item from another item? -

my use case have item has link in item. example, item 123456789/152 has metadata field dc.relation.hasversion=123456789/717 . within item view of 123456789/152 , how can retrieve values of metadata of 123456789/717 ? example, want retrieve dc.language.iso value of 123456789/717 123456789/152 . i looked @ related items feature in dspace don't know how metadata displayed in related items list pulled items in list. i using dspace version 5.3 mirage 2 theme . edit based on schweerelos answer, below actual code. using custom metadata field dc.relation.languageversion . basically, want link other version instead of displaying value, display dc.language.iso of other version in item-view.xsl . i've incorporated answer of schweerelos question in code just displaying value of dc.relation.languageversion . sample values of dc.relation.languageversion 10665.1/9843 ; 10665.1/9844 ie not complete uri handle. thanks in advance! actual code <xsl:template name=...
Read more