import LightChart from 'light-chart'; export default {     components:{         ltCanvas:require("light-chart/canvas"),         webCanvas:require("light-chart/webCanvas")     },     data(){         return {}     },     mounted(){                  const data = [             { time: 'Jan.', tem: 1000 },             { time: 'Feb.', tem: 2200 },             { time: 'Mar.', tem: 2000 },             { time: 'Apr.', tem: 2600 },             { time: 'May.', tem: 2000 },             { time: 'Jun.', tem: 2600 },             { time: 'Jul.', tem: 2800 },             { time: 'Aug.', tem: 2000 },             { time: 'Sept.', tem: 2300 },             { time: 'Oct.', tem: 1500 },             { time: 'Nov.', tem: 3060 },             { time: 'Dec.', tem: 3000 },         ];         const scale = {             time: {                 range: [ 0, 1 ]             },             tem: {                 tickCount: 5,                 min: 0             }         }
 
          
                   let chart = new LightChart.Chart({             ltCanvas:this.$refs.canvas         });                              chart.source(data);         chart.scale(scale);
                   chart.axis('time', {             label(text, index, total) {                 var textCfg = {};                 if (index === 0) {                     textCfg.textAlign = 'left';                 }                 if (index === total - 1) {                     textCfg.textAlign = 'right';                 }                 return textCfg;             }         });         chart.tooltip({             showCrosshairs: true,             onShow(ev) {                 var { items } = ev;                 items[0].name = items[0].title;             }         });         chart.guide().tag({             position: [6, 2800],             content: '最高点',             offsetY: -5,             direct: 'tl'         });         chart.guide().tag({             position: [2, 2000],             content: '2000',             offsetY: -5,             direct: 'tc'         });         chart.area().position('time*tem');         chart.line().position('time*tem');
                   chart.render();
 
                            this.$refs.webCanvas.draw(`             chart.source(${JSON.stringify(data)});             chart.scale(${JSON.stringify(scale)});
              chart.axis('time', {                 label:function(text, index, total) {                     var textCfg = {};                     if (index === 0) {                         textCfg.textAlign = 'left';                     }                     if (index === total - 1) {                         textCfg.textAlign = 'right';                     }                     return textCfg;                 }             });             chart.tooltip({                 showCrosshairs: true,                 onShow:function(ev) {                     var { items } = ev;                     items[0].name = items[0].title;                 }             });             chart.guide().tag({                 position: [6, 2800],                 content: '最高点',                 offsetY: -5,                 direct: 'tl'             });             chart.guide().tag({                 position: [2, 2000],                 content: '2000',                 offsetY: -5,                 direct: 'tc'             });             chart.area().position('time*tem');             chart.line().position('time*tem');             chart.render();         `);     } }
   |