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Ajax refers to a web development technology for creating interactive web applications. The editor below will share with you an example of ajax dynamic assignment of echarts (pie chart and column chart), which has a good reference value and I hope it will be helpful to everyone. Let’s follow the editor and take a look.
This article takes column chart and pie chart ajax dynamic assignment as an example
1. Pie chart assignment steps
(1) jsp page
<!-- 引入echarts官方js --> <script src="js/echarts.js"></script> <body> <!-- 为 ECharts 准备一个具备大小（宽高）的 DOM 饼形图 --> <p id="first" style="width: 600px;height:400px;"></p> [html] view plain copy </body>
(2) js page
//饼图模板
var dom = document.getElementById("first");
var myChart = echarts.init(dom);
var app = {};
option = null;
option = {
title : {
text: '用户位置记录',
subtext: '',
x:'center'
},
tooltip : {
trigger: 'item',
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
legend: {
orient : 'vertical',
x : 'left',
data:[]
},
toolbox: {
show : true,
feature : {
mark : {show: true},
dataView : {show: true, readOnly: false},
magicType : {
show: true,
type: ['pie', 'funnel'],
option: {
funnel: {
x: '25%',
width: '50%',
funnelAlign: 'left',
max: 1548
}
}
},
restore : {show: true},
saveAsImage : {show: true}
}
},
calculable : true,
series : [
{
name:'',
type:'pie',
radius : '55%',
center: ['50%', '60%'],
data:[]
}
]
};
;
if (option && typeof option === "object") {
myChart.setOption(option, true);
}
//饼图动态赋值
var year = $("#year-search").val();
var mouth = $("#mouth-search").val();
$.ajax({
type: "get",
url: rootPath+"/wxbound/getPieDataByMouth.action",
data : {"year":year,"mouth":mouth},
cache : false, //禁用缓存
dataType: "json",
success: function(result) {
var names=[];//定义两个数组
var nums=[];
$.each(result,function(key,values){ //此处我返回的是list<String,map<String,String>>循环map
names.push(values.province_name);
var obj = new Object();
obj.name = values.province_name;
obj.value = values.count;
nums.push(obj);
});
myChart.setOption({ //加载数据图表
legend: {
data: names
},
series: {
// 根据名字对应到相应的系列
name: ['数量'],
data: nums
}
});
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert("查询失败");
}
});
(3) Backend code according to your own code Just like
(4) Display style
## 2. Column chart assignment steps
(1) jsp page
<!-- 引入echarts官方js --> <script src="js/echarts.js"></script> <body> <!-- 为 ECharts 准备一个具备大小（宽高）的 DOM 柱形图 --> <p id="second" style="width: 600px;height:400px;"></p> </body>
(2) js page
//柱形图模板
var domLong = document.getElementById("second");
var myChartSecond = echarts.init(domLong);
var app = {};
option = null;
option = {
color: ['#3398DB'],
tooltip : {
trigger: 'axis',
axisPointer : { // 坐标轴指示器，坐标轴触发有效
type : 'shadow' // 默认为直线，可选为：'line' | 'shadow'
}
},
grid: {
left: '3%',
right: '4%',
bottom: '3%',
containLabel: true
},
xAxis : [
{
type : 'category',
data : [],
axisTick: {
alignWithLabel: true
}
}
],
yAxis : [
{
type : 'value'
}
],
series : [
{
name:'直接访问',
type:'bar',
barWidth: '60%',
data:[]
}
]
};
if (option && typeof option === "object") {
myChartSecond.setOption(option, true);
}
//给柱形图赋值
var year = $("#year-search").val();
$.ajax({
type: "post",
url: rootPath+"/wxbound/getWxboundList.action",
data : {"year":year},
cache : false, //禁用缓存
dataType: "json",
success: function(result) {
console.log(result);
var linNames=[];
var linNums=[];
$.each(result.lin,function(key,values){
linNames.push(values.mouth);
linNums.push(values.count);
});
//柱形图赋值
myChartSecond.setOption({ //加载数据图表
xAxis: {
data: linNames
},
series: {
// 根据名字对应到相应的系列
name: ['数量'],
data: linNums
}
});
},
error: function(XMLHttpRequest, textStatus, errorThrown) {
alert("查询失败");
}
});
}
(3) Just adjust the background code part according to your own needs. . .
(4) Picture style
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