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HTML5 Canvas图像模糊完美解决办法

Posted in HTML / CSS onFebruary 06, 2018

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：

HTML5 Canvas图像模糊完美解决办法 

3、将压缩去掉后的效果

HTML5 Canvas图像模糊完美解决办法 

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三水点靠木网站的支持！

HTML5 Canvas图像模糊完美解决办法

声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。

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