This article mainly introduces to you the perfect solution to HTML5 Canvas image blur. Friends who need it can refer to it. I hope it can help everyone.
1. I recently used h5 canvas to draw animations and found that the images were particularly blurry. Later, I finally found that the culprit was the code
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
, because this line of code was stretched
2. Blurred image effect:
3. The effect after removing the compression
You can change the code to
<!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>
<p class="tipMask">
<p class="tipBox">
<img class="tipsImg lazy" src="/static/imghwm/default1.png" data-src="img/faileTip.png" / alt="How to solve HTML5 Canvas image blur" >
<p class="fileBtn">
<img src="/static/imghwm/default1.png" data-src="img/fileBtn.png" class="lazy" / alt="How to solve HTML5 Canvas image blur" >
<span class="tryAgain">再试一次</span>
</p>
</p>
</p>
<p>
<img class="titleImg lazy" src="/static/imghwm/default1.png" data-src="img/whiteBack.png" / alt="How to solve HTML5 Canvas image blur" >
<p class="bgEvent" id="contentbody">
<p id="eventDetail" v-cloak>
<!--标题-->
<p class="detailevent">
<p class="titlevs">
<img class="teamFlagLogo lazy" src="/static/imghwm/default1.png" data-src="'img/teamlogonew/'+eventDetail.HomeTeamID+'.png'" onerror="nofind(this);" : / alt="How to solve HTML5 Canvas image blur" >
<p class="countryName">
{{eventDetail.HomeTeamName}}
</p>
</p>
<p class="titlevs" style="padding-top:0.3rem ;">
<p>
<!--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>
</p>
<!--开赛时长-->
<!--<p>
<p>73:40</p>
</p>-->
</p>
<p class="titlevs">
<img class="teamFlagLogo lazy" src="/static/imghwm/default1.png" data-src="'img/teamlogonew/'+eventDetail.AwayTeamID+'.png'" onerror="nofind(this);"
: />
<p class="countryName">
{{eventDetail.AwayTeamName}}
</p>
</p>
</p>
<p id="ordersuccess" class="ordersuccess">
<p style="text-align:right;padding-top:0.2rem;padding-left:0.2rem;">
<img src="/static/imghwm/default1.png" data-src="img/ordersuccess/close.png" class="lazy" style="max-width:90%" id="closesuccess" onclick="closesuccess();" / alt="How to solve HTML5 Canvas image blur" >
</p>
<p class="teamname">
<p class="teamnameitem"><p class="teamnameitemtop">{{eventDetail.HomeTeamName}}</p><br /><p class="teamnameitembottom">HOME</p></p>
<p class="teamnameitem "><p class="teamnameitemmiddle">VS</p></p>
<p class="teamnameitem"><p class="teamnameitemtop">{{eventDetail.AwayTeamName}}</p><br /><p class="teamnameitembottom">AWAY</p></p>
</p>
<p class="teamdetail">
<p class="teamdate"><span>{{eventDetail.CompetitionName}}</span><span>/</span><span>{{eventDetail.DateFormat}}</span></p>
<p 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>
</p>
<p 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>
</p>
</p>
</p>
</p>
<p>
<p class="square" id="square">
<canvas id="courtCaseNew" width="980" height="765"></canvas>
</p>
<img src="/static/imghwm/default1.png" data-src="img/balllittle.png" class="lazy" style="max-width:90%" id="imgballNew" / alt="How to solve HTML5 Canvas image blur" >
</p>
<p class="middlechat">
<p class="middleitem" id="jcc">
<p class="tabActive">竞猜场</p>
</p>
<p class="middleitem" id="jcjl">
<p class="tabCommon">竞猜记录</p>
</p>
<p class="middleitem" id="sssj">
<p class="tabCommon">赛事事件</p>
</p>
<p class="middleitem" id="jstj">
<p class="tabCommon">技术统计</p>
</p>
</p>
<p class="downChangrTab quizGames" style="display: block;">
<p id="ruleTypeItems" v-cloak>
<!--胜平负-->
<p 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>
</p>
<p v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==100" id="result" name="selectionItems" class="result">
<p 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($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'赛果',select.SelectionName);" name="itemSelection">
<p class="winEquLose" v-bind:name="'item'+item.MarketId">{{select.SelectionName}}</p>
<p class="winEquLoseOdds " v-bind:name="'item'+item.MarketId">
<span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>
<img src="/static/imghwm/default1.png" data-src="img/upIng.png" class="lazy" style="max-width:90%" v-bind:id="'redOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
<img src="/static/imghwm/default1.png" data-src="img/downIng.png" class="lazy" style="max-width:90%" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
</p>
</p>
</p>
<!--单双-->
<p class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==130">
<span class="speciesName">单双</span>
<span class="rotary" v-if="item.State!=1">(已封盘)</span>
<span class="speciesExp">猜90分钟(含补时)比赛总进球的单双</span>
</p>
<p id="oddeven" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==130" name="selectionItems" class="oddeven">
<p v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'oddevenitemGray commonBorderGray':'oddevenitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($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="/static/imghwm/default1.png" data-src="img/upIng.png" class="lazy" style="max-width:90%" v-bind:id="'redOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
<img src="/static/imghwm/default1.png" data-src="img/downIng.png" class="lazy" style="max-width:90%" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
</p>
</p>
</p>
<!--总进球-->
<p 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>
</p>
<p id="totalGoals" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==410" name="selectionItems" class="totalGoals">
<p 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($event,item.State,select.BackOdds,item.MarketId,select.SelectionId,'总进球',select.SelectionName)" name="itemSelection">
<p class="winEquLose" v-bind:name="'item'+item.MarketId" v-bind:id="'selectionname'+item.MarketId+select.SelectionId">{{select.SelectionName}}</p>
<p class="winEquLoseOdds" v-bind:name="'item'+item.MarketId">
<span v-bind:id="item.MarketId+select.SelectionId" v-bind:maxlimit="select.MaxStakeLimit">{{select.BackOdds}}</span>
<img src="/static/imghwm/default1.png" data-src="img/upIng.png" class="lazy" style="max-width:90%" v-bind:id="'redOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
<img src="/static/imghwm/default1.png" data-src="img/downIng.png" class="lazy" style="max-width:90%" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
</p>
</p>
</p>
<!--全场比分-->
<p class="diffPlaysTetx" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==140">
<span class="speciesName">全场比分</span>
<span class="rotary" v-if="item.State!=1">(已封盘)</span>
<span class="speciesExp">猜90分钟(含补时)全场比分</span>
</p>
<p id="correctScoreHome" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==140" name="selectionItems" class="correctScoreHomeAway">
<p v-bind:class="[(select.BackOdds<1.01 || item.State!=1) ? 'correctScoreitemGray commonBorderGray':'correctScoreitem commonBorder']" v-for="(select,index) in item.Selection" v-on:click="select.BackOdds>=1.01 &&clickFun($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="/static/imghwm/default1.png" data-src="img/upIng.png" class="lazy" style="max-width:90%" v-bind:id="'redOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
<img src="/static/imghwm/default1.png" data-src="img/downIng.png" class="lazy" style="max-width:90%" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
</p>
</p>
</p>
<p class="downImg" onclick="clickImg()">
<img src="/static/imghwm/default1.png" data-src="img/toDown.png" class="lazy" / alt="How to solve HTML5 Canvas image blur" >
</p>
<!--下一进球-->
<p 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>
</p>
<p id="nextgoal" v-for="(item,index) in eventDetail.Market" v-if="item.RuleType==350" name="selectionItems" class="result">
<p 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="/static/imghwm/default1.png" data-src="img/upIng.png" class="lazy" style="max-width:90%" v-bind:id="'redOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
<img src="/static/imghwm/default1.png" data-src="img/downIng.png" class="lazy" style="max-width:90%" v-bind:id="'greenOne'+item.MarketId+select.SelectionId" / alt="How to solve HTML5 Canvas image blur" >
</p>
</p>
<p class="" style="width: 100%;height:0.45rem;"></p>
</p>
<p class="perchp" style="width: 100%;height:3rem;"></p>
</p>
</p>
<!--竞猜记录-->
<p class="downChangrTab guessRecord">
<p class="hide-body" id="dialogorders">
<p class="tableNameGuess">
<li>玩法</li>
<li>选项</li>
<li>赔率</li>
<li>本金</li>
<li>结果</li>
</p>
<ul style="background:#FFFFFF;height:4.79rem;overflow: scroll;">
<p 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>
</p>
</ul>
</p>
</p>
<!--赛事事件-->
<p class="downChangrTab" style="display: none;" v-if="">
<p class="login-body" id="contentCases">
<table class="whatHappen" v-if="cases.length >0">
<tr>
<td></td>
<td class="happenedMiddle">
<p class="happenedMiddle_top" style="margin-top: 0.4rem;"></p>
</td>
<td></td>
</tr>
</table>
<table class="whatHappen" v-for="(item,index) in cases" border="0" cellspacing="0" cellpadding="0">
<tr>
<td></td>
<td class="happenedMiddle">
<p class="happenedMiddle_line"></p>
</td>
<td></td>
</tr>
<tr v-if="item.CaseDescription.indexOf('主')>-1">
<td class="eventsHappendLeft_things">
<p class="eventsText">
<p class="eventsTextLeft_time">{{item.CaseMinutes}}'</p>
<p class="eventsTextLeft_Country">{{item.CaseDescription}}</p>
</p>
</td>
<td class="happenedMiddle">
<p class="eventsHappend_img">
<img src="/static/imghwm/default1.png" data-src="GetMatchEventImg(item.CaseDescription)" class="lazy" : / alt="How to solve HTML5 Canvas image blur" >
</p>
</td>
<td></td>
</tr>
<tr v-if="item.CaseDescription.indexOf('客')>-1">
<td></td>
<td class="happenedMiddle">
<p class="eventsHappend_img">
<img src="/static/imghwm/default1.png" data-src="GetMatchEventImg(item.CaseDescription)" class="lazy" : / alt="How to solve HTML5 Canvas image blur" >
</p>
</td>
<td class="eventsHappendRight_things">
<p class="eventsText">
<p class="eventsTextRight_Country">{{item.CaseDescription}}</p>
<p class="eventsTextRight_time">{{item.CaseMinutes}}'</p>
</p>
</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">
<p class="happenedMiddle_line"></p>
<p class="happenedMiddle_top"></p>
</td>
<td></td>
</tr>
</table>
<!--<p style="width: 100%; height: 2.7rem;"></p>-->
</p>
</p>
<!--技术统计-->
<p class="downChangrTab" style="display: none;">
<p class="skillInfoGaryBg" id="stutsskillsData">
<p class="skillInfo" v-for="(item, index) in skillsData">
<li class="shotsOnTargets">
<p class="shotsOnTargets_left">
<p class="skillsTextFonts">{{item.AwayTeamValue}}</p>
<p class="sotl_bg">
<p class="sotl_bgProgress"></p>
</p>
</p>
<p class="shotsOnTargets_middle">
<img src="/static/imghwm/default1.png" data-src="GetMatchStatsImage(item.StatsType)" class="lazy" : / alt="How to solve HTML5 Canvas image blur" >
<p class="shills_name">{{item.StatsType}}</p>
</p>
<p class="shotsOnTargets_right">
<p class="skillsTextFonts">{{item.HomeTeamValue}}</p>
<p class="sotl_bg">
<p class="sotl_bgProgress"></p>
</p>
</p>
</li>
</p>
</p>
</p>
</p>
<!--底部下单-->
<p class="buttomOrder">
<!--金额输入-->
<!--竞猜金额-->
<p class="aboutMoney">
<input type="text" name="" id="betmoney" class="gussMoney" value="竞猜金额" placeholder="" readonly="readonly" v-model="gussMoney" />
<img class="clearGussMoney lazy" src="/static/imghwm/default1.png" data-src="img/clearBetMoney.png" id="clearGussMoney" / alt="How to solve HTML5 Canvas image blur" >
<!--余额-->
<span class="balanceMoney" id="minemoney">我的余额：888</span>
<!--下注金额-->
<p 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>
</p>
<!--确定-->
<p class="subSure subSureRed" style="text-align:center;" onclick="CreateOrder();" id="subSure">
确定
</p>
</p>
</p>
<!--下单成功后遮罩层-->
<p id="overlay" class="overlay"></p>
</p>
<p>
<img src="/static/imghwm/default1.png" data-src="img/goal/goalball.png" class="lazy" / alt="How to solve HTML5 Canvas image blur" >
<img src="/static/imghwm/default1.png" data-src="img/goal/goal.png" class="lazy" / alt="How to solve HTML5 Canvas image blur" >
<img src="/static/imghwm/default1.png" data-src="img/goal/fireworks.png" class="lazy" / alt="How to solve HTML5 Canvas image blur" >
</p>
<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>Related recommendations:
Examples of methods for image blurring using JavaScript
Sharing of image blurring algorithm code implemented using JavaScript_javascript skills
How to solve the problem of blurred images drawn with Canvas?
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H5: New Features and Capabilities for Web DevelopmentApr 29, 2025 am 12:07 AMH5 brings a number of new functions and capabilities, greatly improving the interactivity and development efficiency of web pages. 1. Semantic tags such as enhance SEO. 2. Multimedia support simplifies audio and video playback through and tags. 3. Canvas drawing provides dynamic graphics drawing tools. 4. Local storage simplifies data storage through localStorage and sessionStorage. 5. The geolocation API facilitates the development of location-based services.
H5: Key Improvements in HTML5Apr 28, 2025 am 12:26 AMHTML5 brings five key improvements: 1. Semantic tags improve code clarity and SEO effects; 2. Multimedia support simplifies video and audio embedding; 3. Form enhancement simplifies verification; 4. Offline and local storage improves user experience; 5. Canvas and graphics functions enhance the visualization of web pages.
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Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
SublimeText3 Chinese version
Chinese version, very easy to use
