js代码
var mycharts = [];
var mychartWrap = document.getElementsByClassName('mychart');
for (var i = 0; i < mychartWrap.length; i++) {
var mychart = echarts.init(mychartWrap[i]);
charts.push(mychart);
}
var option20 = {
...
};
var option21 = {
...
};
var option22 = {
...
};
var option23 = {
...
};
var option24 = {
...
};
var option25 = {
...
};
var option26 = {
...
};
var option27 = {
...
};
var option28 = {
...
};
var option29= {
...
};
var option30 = {
...
};
var option31 = {
...
};
var option32 = {
...
};
mycharts[0].setOption(option20);
mycharts[1].setOption(option21);
mycharts[2].setOption(option22);
mycharts[3].setOption(option23);
mycharts[4].setOption(option24);
mycharts[5].setOption(option25);
mycharts[6].setOption(option26);
mycharts[7].setOption(option27);
mycharts[8].setOption(option28);
mycharts[9].setOption(option29);
mycharts[10].setOption(option30);
mycharts[11].setOption(option31);
mycharts[12].setOption(option32);
var myindex = 0;
setInterval(function() {
mycharts[myindex].clear(); // 清除当前图表
myindex = (myindex + 1) % mycharts.length; // 计算下一个图表的索引
mycharts[myindex].setOption(getOption(myindex)); // 设置下一个图表的配置项
mycharts[myindex].resize({
height: 400,
// top: -23,
width:600
});
}, 3000);
console.log(index,555555);
function getOption(myindex) {
console.log(index)
switch(myindex) {
case 0:
return option20;
case 1:
return option21;
case 2:
return option22;
case 3:
return option23;
case 4:
return option24;
case 5:
return option25;
case 6:
return option26;
case 7:
return option27;
case 8:
return option28;
case 9:
return option29;
case 10:
return option30;
case 11:
return option31;
case 12:
return option32;
default:
return option20;
}
}
html代码
<div id="mychart-carousel" style="margin-left: 42px;margin-top: 3px;">
<div id="mychart1" class="mychart" style="margin-left: -48px;margin-top: -10px;position: absolute;"></div>
<div id="mychart2" class="mychart" style="margin-left: -48px;margin-top: -10px;position: absolute;"></div>
<div id="mychart3" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart4" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart5" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart6" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart7" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart8" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart9" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart10" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart11" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart12" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart13" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart14" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart15" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart16" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
<div id="mychart17" class="mychart" style="margin-left: -48px;margin-top: -11px;position: absolute;"></div>
</div>
但是echarts折线图没有出现,检查错误是:Uncaught TypeError: Cannot read properties of undefined (reading 'setOption')
应该怎么解决?
这个代码怎么了
【以下回答由 GPT 生成】
根据问题描述，代码主要实现了创建Echarts实例对象、设置配置项并将配置项应用到对应的折线图上的功能。目前可以对代码进行的优化包括：
mychart添加到mycharts数组中，避免使用中间变量mycharts。下面是优化后的代码：
var mycharts = document.getElementsByClassName('mychart');
var options = [];
// 这里可能会有一些代码生成options的逻辑...
for (var i = 0; i < mycharts.length && i < options.length; i++) {
var mychart = echarts.init(mycharts[i]);
mychart.setOption(options[i]);
}
优化后的代码使用了一个for循环来遍历mychartWrap和options数组，根据它们的长度来动态创建Echarts实例并设置相应的配置项。这样代码更加高效和简洁。
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