SVG绘制随机的柱形图+php
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body{
text-align: center;
}
svg{
background: #ddd;
}
</style>
</head>
<body>
<svg width="500" height="400"></svg>
<script src="data/jquery-3.2.1.js"></script>
<script>
$.ajax({
type:"GET",
url:"data/07_saledata.php",
success:function(data){
console.log(data);
for(var i = 0;i<data.length;i++){
var dept = data[i];
var rect = document.createElementNS("http://www.w3.org/2000/svg",'rect');
rect.setAttribute("width",50);
rect.setAttribute("height",dept.value);
rect.setAttribute("x",100*i);
rect.setAttribute('fill', rc(0,256));//填充色
rect.setAttribute("y",400-dept.value);
s3.appendChild(rect);
}
},
error:function(){
alert("您的网络出现故障，请检查!");
}
})
function rn(min, max) {
return Math.floor(Math.random() * (max - min) + min);
}
//random color，返回指定范围内的随机颜色
function rc(min, max) {
var r = rn(min, max);
var g = rn(min, max);
var b = rn(min, max);
return `rgb(${r}, ${g}, ${b})`;
}
</script>
</body>
</html><?php
header("Content-Type:application/json;charset=utf-8");
$rows = [];
/*
$rows=[
["月份"=>"一月","value"=>280],
["月份"=>"二月","value"=>270],
["月份"=>"三月","value"=>380],
["月份"=>"四月","value"=>280],
["月份"=>"五月","value"=>280],
["月份"=>"六月","value"=>210],
["月份"=>"七月","value"=>180],
["月份"=>"八月","value"=>280],
["月份"=>"九月","value"=>200],
["月份"=>"十月","value"=>280],
["月份"=>"十一月","value"=>300],
["月份"=>"十二月","value"=>300]
];
*/
$rows[]=["月份"=>"1月","value"=>160];
$rows[]=["月份"=>"2月","value"=>290];
$rows[]=["月份"=>"3月","value"=>220];
$rows[]=["月份"=>"4月","value"=>100];
echo json_encode($rows);
?>***********记得添加jquery-3.2.1.js哦