js实现圆盘记速表_javascript技巧
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2023-12-31 16:14:04
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如何利用AmCharts制作的汽车速度计速表,通过设置不同的速度(数字)来动态改变计速表的指针
效果图:
javascript代码:
var chart = AmCharts.makeChart("chartdiv", { "type": "gauge", "theme": "none", "axes": [{ "axisThickness": 1, "axisAlpha": 0.2, "tickAlpha": 0.2, "valueInterval": 20, "bands": [{ "color": "#84b761", "endValue": 90, "startValue": 0 }, { "color": "#fdd400", "endValue": 130, "startValue": 90 }, { "color": "#cc4748", "endValue": 220, "innerRadius": "95%", "startValue": 130 }], "bottomText": "0 km/h", "bottomTextYOffset": -20, "endValue": 320 }], "arrows": [{}] }); window.onload=function(){ chart.arrows[0].setValue(80); chart.axes[0].setBottomText(80 " km/h"); } document.getElementById("btnSure").onclick=function(){ if(document.getElementById("txtNum").value>320){ alert("超出最大值"); return; } if(document.getElementById("txtNum").value
引入JS:
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