QQ可以查带地方带详细地址快递单号吗?

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echarts(3)
在谈 formatter 之前,先来说说 grid。在官方文档中,grid 介绍的很详细。
grid 为直角坐标系内绘图网格,可以设置 x y x2 y2 等值。这在控制图表摆放位置上,起了重要的作用。&
如图所示,
x 为直角坐标系内绘图网格左上角横坐标,数值单位px,支持百分比(字符串),如'50%'(显示区域横向中心)
y 为左上纵坐标,x2为右下横坐标,y2为右下纵坐标。
需要设置的话,就按照tooltip 或 legend 的格式设置就行。
接下来就是 formatter 了。为了弥补 echarts 在时间或计量单位上格式的不足,echarts 暂时利用 formatter 来加上需要个格式,对数据呈现方式进行修改。
在设置 formatter 的时候可以用在 tooltip 和 y 轴上。
{Function},传递参数列表如下:
&Array& params : 数组内容同模板变量,[[a, b, c, d, e, data], [a1, b1, c1, d1, e1, data1], ...],不同的是当trigger为item时最后一项返回option中的完整data&String& ticket : 异步回调标识&Function& callback : 异步回调,回调时需要两个参数,第一个为前面提到的ticket,第二个为填充内容html*函数回调时this指针指向当前图表实例(myChart)
这里举个例子:
tooltip : {
trigger: 'axis',
formatter: function(params,ticket,callback){
var res = params[0][0] + '&br/&';
for (var i = 0; i & params. i++) {
if (params[i][2]==1)
{var rank=&B&}
else if (params[i][2]==2)
{rank=&A&}
else if (params[i][2]==3)
{rank=&C&};
res += params[i][1] + &: & +
如果用 console 来看到 params 其实是一组模板中的变量,这里都可以加到 variable res 中,然后将某些数字的变量变成我们想要的格式,然后 return 就行了。
axisLabel:{
formatter : function(v) {
if (v == 1) {return 'B'}
else if (v ==2 ) {return 'A'}
else if (v ==3 ) {return 'C'};
还有 y 轴的使用,就更加简单,直接一个 function 搞定。
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