1、下载echarts插件，下载地址：http://echarts.baidu.com/
2、具体入门案例就不啰嗦了，参考官方教程：http://echarts.baidu.com/tutorial.html
3、前台引入echarts和jquery，ajax请求相应的json数据
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>ECharts</title>
<!-- 引入 echarts.js -->
<script src="__ROOT__/Public/jquery-1.10.2.min.js"></script>
<script src="__ROOT__/Public/echarts.common.min.js"></script>
</head>
<body>
<!-- 为ECharts准备一个具备大小（宽高）的Dom -->
<div id="main" style="width: 1200px;height:400px;"></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById(‘main‘));
// 指定图表的配置项和数据
var date = [],num = [];
function getNumber(){
$.ajax({
url:"__CONTROLLER__/getRegister",
async:false,
dataType:‘json‘,
type:‘post‘,
success:function(msg){
var result = msg.result;
if(msg.code == 200){
for(var i = 0 ; i < result.length; i++){
date.push(result[i].date);
num.push(result[i].count);
}
}
}
});
};
getNumber();
option = {
title: {
text: ‘近期注册走势‘
},
tooltip: {
trigger: ‘axis‘
},
legend: {
data:[‘注册数‘]
},
grid: {
left: ‘3%‘,
right: ‘4%‘,
bottom: ‘3%‘,
containLabel: true
},
toolbox: {
feature: {
saveAsImage: {}
}
},
xAxis: {
type: ‘category‘,
boundaryGap: false,
data: date
},
yAxis: {
type: ‘value‘
},
series: [
{
name:‘注册数‘,
type:‘line‘,
stack: ‘总量‘,
data:num
},
]
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
</body>
</html>
4、后台接口返回json数据
public function getRegister(){
$user = D(‘User‘);
$beginLastweek=strtotime(‘-30 days‘);
//两周前的时间戳
$begin = strtotime(date(‘Y-m-d‘,$beginLastweek));
$result = $user->field("register_time")->where("register_time > ‘%s‘",$begin)->select();
$sql = "SELECT FROM_UNIXTIME( register_time, ‘%Y-%m-%d‘ ) AS date,count(*) as count FROM app_user WHERE register_time > $beginLastweek GROUP BY register_time div 86400;";
$result = $user->query($sql);
$this->ajaxReturn(array(‘code‘=>200,‘result‘=>$result));
}
显示效果：
时间： 2024-09-30 18:30:39