怎么样解决HTMl5 Canvas图像模糊的问题?

怎么样解决HTMl5 Canvas图像模糊的问题?

1、最近在用h5的canvas画动画,发现图像特别模糊。后来终于找到罪魁祸首是<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />这个代码,因为这行代码进行了伸缩

2、模糊图像的效果:

怎么样解决HTMl5 Canvas图像模糊的问题?

3、将压缩去掉后的效果

怎么样解决HTMl5 Canvas图像模糊的问题?

可以将代码改成

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8" />
  <meta name="viewport" content="user-scalable=no" />
  <title>赛事详细页</title>
  <script src="js/rem.js" type="text/javascript" charset="utf-8"></script>
  <link rel="stylesheet" type="text/css" href="css/m_reset.css" />
  <link rel="stylesheet" type="text/css" href="css/gameListsNew.css" />
  <link href="css/mask.css" rel="stylesheet" />
</head>
<body>
  <div class="tipMask">
    <div class="tipBox">
      <img src="img/faileTip.png" class="tipsImg" />
      <div class="fileBtn">
        <img src="img/fileBtn.png" />
        <span class="tryAgain">再试一次</span>
      </div>
    </div>
  </div>
  <div>
    <img src="img/whiteBack.png" class="titleImg" />
    <div class="bgEvent" id="contentbody">
      <div id="eventDetail" v-cloak>
        <!--标题-->
        <div class="detailevent">
          <div class="titlevs">
            <img class="teamFlagLogo" onerror="nofind(this);" :src="'img/teamlogonew/'+eventDetail.HomeTeamID+'.png'" />
            <div class="countryName">
              {{eventDetail.HomeTeamName}}
            </div>
          </div>
          <div class="titlevs" style="padding-top:0.3rem ;">
            <div>
              <!--未开赛-->
              <!--<p class="theWorldCup">世界杯</p>-->
              <p class="theGameNowDataTime">{{eventDetail.TimeFormat }}</p>
              <p class="gameBeginTime">{{getScoreOrVs(eventDetail.HomeTeamScore,eventDetail.AwayTeamScore)}}</p>
            </div>
            <!--开赛时长-->
            <!--<div>
              <p>73:40</p>
            </div>-->
          </div>
          <div class="titlevs">
            <img class="teamFlagLogo" onerror="nofind(this);"
               :src="'img/teamlogonew/'+eventDetail.AwayTeamID+'.png'" />
            <div class="countryName">
              {{eventDetail.AwayTeamName}}
            </div>
          </div>
        </div>
        <div id="ordersuccess" class="ordersuccess">
          <div style="text-align:right;padding-top:0.2rem;padding-left:0.2rem;">
            <img src="img/ordersuccess/close.png" style="width:0.45rem;height:0.45rem;" id="closesuccess" onclick="closesuccess();" />
          </div>
          <div class="teamname">
            <div class="teamnameitem"><p class="teamnameitemtop">{{eventDetail.HomeTeamName}}</p><br /><p class="teamnameitembottom">HOME</p></div>
            <div class="teamnameitem "><p class="teamnameitemmiddle">VS</p></div>
            <div class="teamnameitem"><p class="teamnameitemtop">{{eventDetail.AwayTeamName}}</p><br /><p class="teamnameitembottom">AWAY</p></div>
          </div>
          <div class="teamdetail">
            <div class="teamdate"><span>{{eventDetail.CompetitionName}}</span><span>/</span><span>{{eventDetail.DateFormat}}</span></div>
            <div class="teamplaysselection">
              <table style="width:100%;text-align:left;height:100%;">
                <tr>
                  <td class="teamplaysselectiontop" style="width:50%;">玩法</td>
                  <td class="teamplaysselectiontop" style="width:50%;">选项</td>
                </tr>
                <tr>
                  <td class="teamplaysselectionbottom" style="width:50%;" id="rulename">Match Odds</td>
                  <td class="teamplaysselectionbottom" style="width:50%;" id="selectionname">Home</td>
                </tr>
              </table>
            </div>
            <div class="teamwinmoney">
              <table style="width:90%;text-align:left;height:100%;">
                <tr>
                  <td class="teamwinmoneytop" style="width:50%;">
                    本金
                  </td>
                  <td class="teamwinmoneytop" style="width:50%;">
                    赔率
                  </td>
                  <td class="teamwinmoneytop" style="width:50%;">
                    预赢
                  </td>
                </tr>
                <tr>
                  <td class="teamwinmoneybottom" style="width:50%;" id="betmoneysuc">1000</td>
                  <td class="teamwinmoneybottom" style="width:50%;" id="betodds">12.54</td>
                  <td class="teamwinmoneybottom" style="width:50%;" id="betwin">12540</td>
                </tr>
              </table>
            </div>
          </div>
        </div>
      </div>
      <div>
        <div class="square" id="square">
          <canvas id="courtCaseNew" width="980" height="765"></canvas>
        </div>
        <img src="img/balllittle.png" style="width:20px;height:20px;display:none;" id="imgballNew" />
      </div>
      <div class="middlechat">
        <div class="middleitem" id="jcc">
          <p class="tabActive">竞猜场</p>
        </div>
        <div class="middleitem" id="jcjl">
          <p class="tabCommon">竞猜记录</p>
        </div>
        <div class="middleitem" id="sssj">
          <p class="tabCommon">赛事事件</p>
        </div>
        <div class="middleitem" id="jstj">
          <p class="tabCommon">技术统计</p>
        </div>
      </div>
      <div class="downChangrTab quizGames" style="display: block;">
        <div id="ruleTypeItems" v-cloak>
          <!--胜平负-->
          <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==100">
            <span class="speciesName">赛果</span>
            <span class="rotary" v-if="item.State!=1">(已封盘)</span>
            <span class="speciesExp">猜90分钟(含补时)两队的比赛结果</span>
          </div>
          <div v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==100" id="result" name="selectionItems" class="result">
            <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'resutitemGray commonBorderGray':'resutitem commonBorder']" v-for="(select,index) in item.Selection"
               v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'赛果',select.SelectionName);" name="itemSelection">
              <p class="winEquLose" v-bind:name="'item'+item.MarketId">{{select.SelectionName}}</p>
              <p class="winEquLoseOdds " v-bind:name="'item'+item.MarketId">
                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>
                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />
                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />
              </p>
            </div>
          </div>
          <!--单双-->
          <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==130">
            <span class="speciesName">单双</span>
            <span class="rotary" v-if="item.State!=1">(已封盘)</span>
            <span class="speciesExp">猜90分钟(含补时)比赛总进球的单双</span>
          </div>
          <div id="oddeven" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==130" name="selectionItems" class="oddeven">
            <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'oddevenitemGray commonBorderGray':'oddevenitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'单双',select.SelectionName)" name="itemSelection">
              <p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>
              <p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">
                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>
                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />
                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />
              </p>
            </div>
          </div>
          <!--总进球-->
          <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==410">
            <span class="speciesName">总进球 </span>
            <span class="rotary" v-if="item.State!=1">(已封盘)</span>
            <span class="speciesExp">猜90分钟(含补时)比赛总进球的数 </span>
          </div>
          <div id="totalGoals" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==410" name="selectionItems" class="totalGoals">
            <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'totalGoalitemGray commonBorderGray':'totalGoalitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'总进球',select.SelectionName)" name="itemSelection">
              <p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>
              <p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">
                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>
                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />
                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />
              </p>
            </div>
          </div>
          <!--全场比分-->
          <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==140">
            <span class="speciesName">全场比分</span>
            <span class="rotary" v-if="item.State!=1">(已封盘)</span>
            <span class="speciesExp">猜90分钟(含补时)全场比分</span>
          </div>
          <div id="correctScoreHome" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==140" name="selectionItems" class="correctScoreHomeAway">
            <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'correctScoreitemGray commonBorderGray':'correctScoreitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'全场比分',select.SelectionName)" name="itemSelection">
              <p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>
              <p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">
                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>
                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />
                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />
              </p>
            </div>
          </div>
          <div class="downImg" onclick="clickImg()">
            <img src="img/toDown.png" />
          </div>
          <!--下一进球-->
          <div class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==350">
            <span class="speciesName">下一进球</span>
            <span class="rotary" v-if="item.State!=1">(已封盘)</span>
            <span class="speciesExp">猜90分钟(含补时)下一进球的球队</span>
          </div>
          <div id="nextgoal" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==350" name="selectionItems" class="result">
            <div v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'resutitemGray commonBorderGray':'resutitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'下一进球',select.SelectionName)" name="itemSelection">
              <p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>
              <p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">
                <span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>
                <img src="img/upIng.png" style="width:0.2rem;display:none;" v-bind:id="'redOne'+item.MarketId+select.SelectionId" />
                <img src="img/downIng.png" style="width:0.2rem;display:none;" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" />
              </p>
            </div>
            <div class="" style="width: 100%;height:0.45rem;"></div>
          </div>
          <div class="perchDiv" style="width: 100%;height:3rem;"></div>
        </div>
      </div>
      <!--竞猜记录-->
      <div class="downChangrTab guessRecord">
        <div class="hide-body" id="dialogorders">
          <div class="tableNameGuess">
            <li>玩法</li>
            <li>选项</li>
            <li>赔率</li>
            <li>本金</li>
            <li>结果</li>
          </div>
          <ul style="background:#FFFFFF;height:4.79rem;overflow: scroll;">
            <div class="guessedLists" id="contentOrders" v-for="(item,index) in orders">
              <li>
                {{item.MarketName}}
              </li>
              <li>
                {{item.SelectionName}}
              </li>
              <li>
                {{item.FillPrice}}
              </li>
              <li>
                {{item.FillAmount}}
              </li>
              <li>
                <p v-if="item.Status == '0'"> 待确认</p>
                <p v-else-if="item.Status == '1'">订单正常</p>
                <p v-else-if="item.Status == '2'">{{item.NetReturn}}</p>
                <p v-else-if="item.Status == '3'">订单已被取消</p>
                <p v-else-if="item.Status == '4'">订单无效</p>
                <p v-else="item.Status == '5'">订单被拒绝,投注延迟期间发生重要事件等原因</p>
              </li>
            </div>
          </ul>
        </div>
      </div>
      <!--赛事事件-->
      <div class="downChangrTab" style="display: none;" v-if="">
        <div class="login-body" id="contentCases">
          <table class="whatHappen" v-if="cases.length >0">
            <tr>
              <td></td>
              <td class="happenedMiddle">
                <div class="happenedMiddle_top" style="margin-top: 0.4rem;"></div>
              </td>
              <td></td>
            </tr>
          </table>
          <table class="whatHappen" style="" v-for="(item,index) in cases" border="0" cellspacing="0" cellpadding="0">
            <tr>
              <td></td>
              <td class="happenedMiddle">
                <div class="happenedMiddle_line"></div>
              </td>
              <td></td>
            </tr>
            <tr v-if="item.CaseDescription.indexOf('主')>-1">
              <td class="eventsHappendLeft_things">
                <div class="eventsText">
                  <p class="eventsTextLeft_time">{{item.CaseMinutes}}'</p>
                  <p class="eventsTextLeft_Country">{{item.CaseDescription}}</p>
                </div>
              </td>
              <td class="happenedMiddle">
                <div class="eventsHappend_img">
                  <img :src="GetMatchEventImg(item.CaseDescription)" />
                </div>
              </td>
              <td></td>
            </tr>
            <tr v-if="item.CaseDescription.indexOf('客')>-1">
              <td></td>
              <td class="happenedMiddle">
                <div class="eventsHappend_img">
                  <img :src="GetMatchEventImg(item.CaseDescription)" />
                </div>
              </td>
              <td class="eventsHappendRight_things">
                <div class="eventsText">
                  <p class="eventsTextRight_Country">{{item.CaseDescription}}</p>
                  <p class="eventsTextRight_time">{{item.CaseMinutes}}'</p>
                </div>
              </td>
            </tr>
            <tr v-if="item.CaseDescription.indexOf('主')<0 && item.CaseDescription.indexOf('主')<0">
              <td></td>
              <td>
                <a class="ti tlefoc">{{item.CaseMinutes}}'</a>
                <a class="titlefoc">{{item.DesChina}}</a>
              </td>
              <td></td>
            </tr>
          </table>
          <table class="whatHappen" v-if="cases.length >0">
            <tr>
              <td></td>
              <td class="happenedMiddle">
                <div class="happenedMiddle_line"></div>
                <div class="happenedMiddle_top"></div>
              </td>
              <td></td>
            </tr>
          </table>
          <!--<div style="width: 100%; height: 2.7rem;"></div>-->
        </div>
      </div>
      <!--技术统计-->
      <div class="downChangrTab" style="display: none;">
        <div class="skillInfoGaryBg" id="stutsskillsData">
          <div class="skillInfo" v-for="(item, index) in skillsData">
            <li class="shotsOnTargets">
              <div class="shotsOnTargets_left">
                <p class="skillsTextFonts">{{item.AwayTeamValue}}</p>
                <div class="sotl_bg">
                  <div class="sotl_bgProgress"></div>
                </div>
              </div>
              <div class="shotsOnTargets_middle">
                <img :src="GetMatchStatsImage(item.StatsType)" />
                <p class="shills_name">{{item.StatsType}}</p>
              </div>
              <div class="shotsOnTargets_right">
                <p class="skillsTextFonts">{{item.HomeTeamValue}}</p>
                <div class="sotl_bg">
                  <div class="sotl_bgProgress"></div>
                </div>
              </div>
            </li>
          </div>
        </div>
      </div>
    </div>
    <!--底部下单-->
    <div class="buttomOrder">
      <!--金额输入-->
      <!--竞猜金额-->
      <div class="aboutMoney">
        <input type="text" name="" id="betmoney" class="gussMoney" value="竞猜金额" placeholder="" readonly="readonly" v-model="gussMoney" />
        <img src="img/clearBetMoney.png" class="clearGussMoney" id="clearGussMoney" />
        <!--余额-->
        <span class="balanceMoney" id="minemoney">我的余额:888</span>
        <!--下注金额-->
        <div class="diffGussMoney" style="text-align:center;">
          <ul>
            <li name="bettingmoney" class="difGuMonCom" val="100">+100</li>
            <li name="bettingmoney" class="difGuMonCom" val="500">+500</li>
            <li name="bettingmoney" class="difGuMonCom" val="1000">+1000</li>
            <li class="difGuMonCom" id="allin" style="line-height: 0.5rem;">
              <p style="height: 0.3rem;">All <span style="margin-left: 0.05rem;">in</span></p>
              <p id="allinvalue" style="height: 0.3rem;">100</p>
            </li>
          </ul>
        </div>
        <!--确定-->
        <p class="subSure subSureRed" style="text-align:center;" onclick="CreateOrder();" id="subSure">
          确定
        </p>
      </div>
    </div>
    <!--下单成功后遮罩层-->
    <div id="overlay" class="overlay"></div>
  </div>
  <div>
    <img src="img/goal/goalball.png" />
    <img src="img/goal/goal.png" />
    <img src="img/goal/fireworks.png" />
  </div>
  <script src="js/jquery-1.10.2.min.js" type="text/javascript" charset="utf-8"></script>
  <script src="js/vue.min.js" type="text/javascript" charset="utf-8"></script>
  <script src="js/common.js?ver=012902" type="text/javascript" charset="utf-8"></script>
  <script src="js/jquery.cookie.min.js"></script>
  <script src="js/mask.js?ver=012901"></script>
  <script type="text/javascript" src="js/eventDetailsNew.js?ver=012908"></script>
  <script src="../js/animation.js"></script>
</body>
</html>

总结

以上所述是小编给大家介绍的HTML5 Canvas图像模糊完美解决办法,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对路饭网站的支持!