现在分别对折线图、柱状图、饼图、中国地图四类图表的数据绑定进行详细的介绍。echarts中其它的图表方法都差不多，只要了解官方的demo，按照指定的数据结构进行解析都能很方便的得到想要的结果；
echarts中提供了setOption、setSeries两个方法可以对图表的相关数据和属性进行动态设置，setOption一定要在setSeries之前设置；
var myChart = ec.init(document.getElementById('div1'));
var ecConfig = require('echarts/config');
var option = {
title: {
text: '标题',
x:"center"
},
tooltip: {
trigger: 'axis'
},
legend: {
data:[],
y:"bottom"
},
toolbox: {
show: true,
feature: {
mark: { show: true },
dataView: { show: true, readOnly: false },
magicType: { show: true, type: ['line', 'bar'] },
restore: { show: true },
saveAsImage: { show: true }
}
},
xAxis: [{
type: 'category',
data:[]
}],
yAxis: [{
type: 'value'
}],
series: []
};
option中的属性可以通过对象属性的方式获取设置；例如以上代码中，
option.legend.data=["xx","xx"] 可以通过这种方法设置对应属性的值
option.title.text="改变标题";//改变标题属性
option.xAxis[0]["data"]=[];//改变坐标值
myChart.setOption(option);//设置图表对象的所有参数属性
myChart.setSeries(seriesData);//设置图表对象的数据集合
通过后台交互数据肯定会有一定的延迟，这时最好能有一个友好载入提示，echarts提供showLoading方法
// 载入动画提示
myChart.showLoading({
text: '正在努力的读取数据中...'
});
//取消载入提示
myChart.hideLoading();
来几个具体的实例吧。
以下实例的ajax用jquery的$.ajax。所以如果你要在本地测试，需要引用jquery.js。
这里所有demo虽然也请求了后台。但都是通过前后模拟了一个返回的json数据。不管各位是搞jsp、asp、php的都没关系，只要按指定的格式生成对的格式的json数据就行了。
至于后台如何生成json数据，各自就baidu下吧。这里就不提了。
通过官方的demo我可以看到哪些属性是需要动态传入数据，然后我们按照格式传入对应的值或数组；
通过demo的代码。我们可以看出折线标红的地方需要动态设置分别是
option.title.text="标题";
option.legend.data=["图例1","图例2","……"];
option.xAxis[0]["data"]=["一","二","三","……"];//x轴数据
var seriesData=[
{
name:"图例1",
type:"line",
data:[1,2,3]
}
]
myChart.setOption(option); //设置全部参数属性
myChart.setSeries(seriesData);//设置图例数据
通过以上方法就可以实现动态的echarts数据改变了。
1、折线图
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>数据绑定 柱状图</title>
<script src="../js/jquery-1.7.min.js" type="text/javascript"></script>
<script src="../build/source/echarts.js" type="text/javascript"></script>
</head>
<body>
<div id="div1" style="width:900px;height:400px;border:1px solid #dddddd;margin:10px auto;"></div>
<script type="text/javascript">
require.config({
paths: {
echarts: '../build/dist' //引用资源文件夹路径，注意路径
}
});
require(
[
'echarts',
'echarts/chart/bar',
'echarts/chart/line'
],
function (ec) {
var myChart = ec.init(document.getElementById('div1'));
var ecConfig = require('echarts/config');
var option = {
title: {
text: '',
x:"center"
},
tooltip: {
trigger: 'axis'
},
legend: {
data:[],
y:"bottom"
},
toolbox: {
show: true,
feature: {
mark: { show: true },
dataView: { show: true, readOnly: false },
magicType: { show: true, type: ['line', 'bar'] },
restore: { show: true },
saveAsImage: { show: true }
}
},
xAxis: [{
type: 'category',
data:[]
}],
yAxis: [{
type: 'value'
}],
series: []
};
// 载入动画---------------------
myChart.showLoading({
text: '正在努力的读取数据中...', //loading话术
});
$.ajax({
url:"Default.aspx",
data:{},
success:function(data){
//数据接口成功返回
//后台需要返回以下结构的json数据
data={
"legen":["访问量","订单数"],
"axis":['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月'],
"series":[
[2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4, 3.3],
[4.0, 2.9, 6.0, 21.2, 50.6, 56.7, 115.6, 102.2, 62.6, 20.0, 9.4, 3.3]
]
};
var legendData=[];
var xAxisData=[];
var seriesData=[];
if(data!=null && data["series"].length>0){
legendData=data["legen"];
xAxisData=data["axis"];
for(var i=0,len=data["series"].length;i<len;i++){
seriesData.push({
"name":legendData[i],
"type":"line",
"data":data["series"][i]
});
}
}
option.title.text="折线图标题";
option.legend.data=legendData;
option.xAxis[0]["data"]=xAxisData;
myChart.setOption(option);
myChart.setSeries(seriesData);
},
error:function(){
//数据接口异常处理
var legendData=[''];
var xAxisData=[''];
var seriesData = [
{
name:'',
type: 'line',
data: [0]
}
];
option.legend.data=legendData;
option.xAxis[0]["data"]=xAxisData;
myChart.setOption(option);
myChart.setSeries(seriesData);
},
complete:function(){
//不管数据接口成功或异常，都终于载入提示
//停止动画载入提示
myChart.hideLoading();
}
});
}
);
</script>
</body>
</html>
2、柱状图
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>数据绑定 柱状图</title>
<script src="../js/jquery-1.7.min.js" type="text/javascript"></script>
<script src="../build/source/echarts.js" type="text/javascript"></script>
</head>
<body>
<div id="div1" style="width:900px;height:400px;border:1px solid #dddddd;margin:10px auto;"></div>
<script type="text/javascript">
require.config({
paths: {
echarts: '../build/dist' //引用资源文件夹路径，注意路径
}
});
require(
[
'echarts',
'echarts/chart/bar',
'echarts/chart/line'
],
function (ec) {
var myChart = ec.init(document.getElementById('div1'));
var ecConfig = require('echarts/config');
var option = {
title: {
text: '标题',
x:"center"
},
tooltip: {
trigger: 'axis'
},
legend: {
data:[],
y:"bottom"
},
toolbox: {
show: true,
feature: {
mark: { show: true },
dataView: { show: true, readOnly: false },
magicType: { show: true, type: ['line', 'bar'] },
restore: { show: true },
saveAsImage: { show: true }
}
},
xAxis: [{
type: 'category',
data:[] //['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月']
}],
yAxis: [{
type: 'value'
}],
series: []
};
// 载入动画---------------------
myChart.showLoading({
text: '正在努力的读取数据中...', //loading话术
});
$.ajax({
url:"Default.aspx",
data:{},
success:function(data){
//后台需要返回以下结构的json数据
data={
"legen":["访问量","订单数"],
"axis":['1月', '2月', '3月', '4月', '5月', '6月', '7月', '8月', '9月', '10月', '11月', '12月'],
"series":[
[2.0, 4.9, 7.0, 23.2, 25.6, 76.7, 135.6, 162.2, 32.6, 20.0, 6.4, 3.3],
[4.0, 2.9, 6.0, 21.2, 50.6, 56.7, 115.6, 102.2, 62.6, 20.0, 9.4, 3.3]
]
}
var legendData=[];
var xAxisData=[];
var seriesData=[];
if(data!=null && data["series"].length>0){
legendData=data["legen"];
xAxisData=data["axis"];
for(var i=0,len=data["series"].length;i<len;i++){
seriesData.push({
"name":legendData[i],
"type":"bar", //柱状图和拆线图类似只要将bar 改成line
"data":data["series"][i]
});
}
}
option.legend.data=legendData;
option.xAxis[0]["data"]=xAxisData;
myChart.setOption(option);
myChart.setSeries(seriesData);
},
error:function(){
var legendData=[''];
var xAxisData=[''];
var seriesData = [
{
name:'订单数',
type: 'bar', //柱状图和拆线图类似只要将bar 改成line
data: [0]
}
];
option.legend.data=legendData;
option.xAxis[0]["data"]=xAxisData;
myChart.setOption(option);
myChart.setSeries(seriesData);
},
complete:function(){
//停止动画载入提示
myChart.hideLoading();
}
});
}
);
</script>
</body>
</html>
3、饼图
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>数据绑定 饼图</title>
<script src="../js/jquery-1.7.min.js" type="text/javascript"></script>
<script src="../build/source/echarts.js" type="text/javascript"></script>
</head>
<body>
<div id="div1" style="width:900px;height:400px;border:1px solid #dddddd;margin:10px auto;"></div>
<script type="text/javascript">
require.config({
paths: {
echarts: '../build/dist' //引用资源文件夹路径，注意路径
}
});
require(
[
'echarts',
'echarts/chart/bar',
'echarts/chart/line',
'echarts/chart/pie'
],
function (ec) {
var myChart = ec.init(document.getElementById('div1'));
var ecConfig = require('echarts/config');
var option = {
title: {
text: '标题',
x:"center"
},
tooltip: {
trigger: 'item',
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
legend: {
data:[],
y:"bottom"
},
calculable : true,
toolbox: {
show: true,
feature: {
mark: { show: true },
dataView: { show: true, readOnly: false },
magicType: { show: true, type: ['line', 'bar'] },
restore: { show: true },
saveAsImage: { show: true }
}
},
series: []
};
// 载入动画---------------------
myChart.showLoading({
text: '正在努力的读取数据中...', //loading话术
});
$.ajax({
url:"Default.aspx",
data:{},
success:function(data){
//后台需要返回以下结构的json数据
data={
"legen":["访问量","订单数","购买数"],
"series":[4440,3220,1110]
}
var legendData=[];
var seriesData=[];
if(data!=null && data["series"].length>0){
legendData=data["legen"];
seriesData.push({
"name":"饼图标例1",
"type":"pie",
"radius" : '55%', //饼图半径大小
"center": ['50%', '60%'],//饼图圆心位置x,y
"data":function(){
var t_data=[];
for(var i=0,len=data["series"].length;i<len;i++){
t_data.push({
"name":legendData[i],
"value":data["series"][i]
});
}
return t_data;
}()
});
}
option.legend.data=legendData;
myChart.setOption(option);
myChart.setSeries(seriesData);
},
error:function(){
var legendData=[''];
var seriesData = [
{
"name":"饼图标例1",
"type":"pie",
"radius" : '55%', //饼图半径大小
"center": ['50%', '60%'],//饼图圆心位置x,y
data: [0]
}
];
option.legend.data=legendData;
myChart.setOption(option);
myChart.setSeries(seriesData);
},
complete:function(){
//停止动画载入提示
myChart.hideLoading();
}
});
}
);
</script>
</body>
</html>
4、中国地图
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>数据绑定 中国地图</title>
<script src="../js/jquery-1.7.min.js" type="text/javascript"></script>
<script src="../build/source/echarts.js" type="text/javascript"></script>
</head>
<body>
<div id="div1" style="width:900px;height:400px;border:1px solid #dddddd;margin:10px auto;"></div>
<script type="text/javascript">
require.config({
paths: {
echarts: '../build/dist' //引用资源文件夹路径，注意路径
}
});
require(
[
'echarts',
'echarts/chart/bar',
'echarts/chart/line',
'echarts/chart/map'
],
function (ec) {
var myChart = ec.init(document.getElementById('div1'));
var ecConfig = require('echarts/config');
var mapType = [
'china',
'广东', '青海', '四川', '海南', '陕西',
'甘肃', '云南', '湖南', '湖北', '黑龙江',
'贵州', '山东', '江西', '河南', '河北',
'山西', '安徽', '福建', '浙江', '江苏',
'吉林', '辽宁', '*',
'*', '广西', '宁夏', '内蒙古', '*',
'北京', '天津', '上海', '重庆',
'香港', '澳门'
];
var option = {
title: {
text: '标题',
x:"center"
},
tooltip: {
trigger: 'item',
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
legend: {
data:[],
y:"bottom"
},
dataRange: {
min: 0,
max:50000, //最好通过对数据计算得出，不要写死
x: 'left',
y: 'bottom',
text:['高','低'], // 文本，默认为数值文本
calculable : true
},
toolbox: {
show: true,
feature: {
mark: { show: true },
dataView: { show: true, readOnly: false },
magicType: { show: true, type: ['line', 'bar'] },
restore: { show: true },
saveAsImage: { show: true }
}
},
series: []
};
// 载入动画---------------------
myChart.showLoading({
text: '正在努力的读取数据中...', //loading话术
});
$.ajax({
url:"Default.aspx",
data:{},
success:function(data){
//后台需要返回以下结构的json数据
data={
"legen":["访问量","订单数"],
"series":[
[{"name":"上海","value":31417.76},{"name":"云南","value":5828.25},{"name":"其他","value":0.00},{"name":"内蒙古","value":297.00},{"name":"北京","value":25683.00},{"name":"吉林","value":3044.38},{"name":"四川","value":26890.66},{"name":"天津","value":11341.98},{"name":"宁夏","value":297.00},{"name":"安徽","value":1553.00},{"name":"山东","value":17969.81},{"name":"山西","value":2675.20},{"name":"广东","value":51438.63},{"name":"广西","value":4806.00},{"name":"*","value":5788.21},{"name":"江苏","value":76003.09},{"name":"江西","value":12879.03},{"name":"河北","value":7811.25},{"name":"河南","value":3772.00},{"name":"浙江","value":13383.12},{"name":"海南","value":0.00},{"name":"湖北","value":22250.17},{"name":"湖南","value":12925.44},{"name":"甘肃","value":7561.56},{"name":"福建","value":22143.76},{"name":"*","value":1802.40},{"name":"贵州","value":6961.41},{"name":"辽宁","value":8506.00},{"name":"重庆","value":14562.92},{"name":"陕西","value":3939.03},{"name":"青海","value":0.00},{"name":"黑龙江","value":2010.28}],
[{"name":"上海","value":31417.76},{"name":"云南","value":5828.25},{"name":"其他","value":0.00},{"name":"内蒙古","value":297.00},{"name":"北京","value":25683.00},{"name":"吉林","value":3044.38},{"name":"四川","value":26890.66},{"name":"天津","value":11341.98},{"name":"宁夏","value":297.00},{"name":"安徽","value":1553.00},{"name":"山东","value":17969.81},{"name":"山西","value":2675.20},{"name":"广东","value":51438.63},{"name":"广西","value":4806.00},{"name":"*","value":5788.21},{"name":"江苏","value":76003.09},{"name":"江西","value":12879.03},{"name":"河北","value":7811.25},{"name":"河南","value":3772.00},{"name":"浙江","value":13383.12},{"name":"海南","value":0.00},{"name":"湖北","value":22250.17},{"name":"湖南","value":12925.44},{"name":"甘肃","value":7561.56},{"name":"福建","value":22143.76},{"name":"*","value":1802.40},{"name":"贵州","value":6961.41},{"name":"辽宁","value":8506.00},{"name":"重庆","value":14562.92},{"name":"陕西","value":3939.03},{"name":"青海","value":0.00},{"name":"黑龙江","value":2010.28}]
]
}
var legendData=[];
var seriesData=[];
if(data!=null && data["series"].length>0){
legendData=data["legen"];
for(var i=0,len=data["series"].length;i<len;i++){
seriesData.push({
"name":legendData[i],
"type":"map",
"mapType":"china",
"roam":false,
"itemStyle":{
"normal":{"label":{show:true}},
"emphasis":{"label":{show:true}}
},
"data": data["series"][i]
});
}
}
option.legend.data=legendData;
myChart.setOption(option);
myChart.setSeries(seriesData);
},
error:function(){
// var legendData=[''];
// var seriesData = [
// {
// "name":"饼图标例1",
// "type":"pie",
// "radius" : '55%', //饼图半径大小
// "center": ['50%', '60%'],//饼图圆心位置x,y
// data: [0]
// }
// ];
// option.legend.data=legendData;
// myChart.setOption(option);
// myChart.setSeries(seriesData);
},
complete:function(){
//停止动画载入提示
myChart.hideLoading();
}
});
}
);
</script>
</body>
</html>
注意dataRange的max和min会影响到颜色深度的。因为当前值会和最大值求比，然后计算颜色深度。
可以通过dataRange的color:['#dddddd','#777777'] 设置max,min的颜色值