echarts之词云随机颜色的配置

Posted 2020-10-03 十盏

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篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了echarts之词云随机颜色的配置相关的知识，希望对你有一定的参考价值。

echarts中的词云字体产生随机颜色，最主演的是要引入worldcloud.js，另外还要有jquery.js文件与echarts.js文件的引入，通过配置即可实现词云随机颜色的产生。下面为大家介绍两种随机颜色的方法。

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>

<div id = "worldDiv" style="width:80%;height:350px;margin:80px auto;background-color: #ccc;border:2px solid #ccc"></div>
<script type="text/javascript" src="jquery-3.2.0.min.js"></script>
<script type="text/javascript" src="echarts.js"></script>
<script type="text/javascript" src="worldcloud.js"></script>
<script type="text/javascript" src="worldData.js"></script>

</body>
</html>

worldData.js

var dataCloud = {
    "cloudData":
        [
            {"name":"澎湃","value":"25"},
            {"name":" 暴晒","value":" 14"},
            {"name":" 套件","value":"13"},
            {"name":" 有","value":" 24"},
            {"name":" 驾驶","value":" 30"},
            {"name":" 满满","value":" 1"},
            {"name":" 行驶","value":" 2"},
            {"name":" 强烈","value":"3"},
            {"name":" 轻盈","value":"8"},
            {"name":" 沉稳","value":"5"},
            {"name":" 1800公里","value":" 1"},
            {"name":" 低","value":" 2"},
            {"name":" 双","value":" 18"},
            {"name":" 前后","value":" 18"},
            {"name":" 跑车","value":" 1"},
            {"name":" 互联","value":" 22"},
            {"name":" 哪","value":" 23"},
            {"name":" 说","value":" 31"},
            {"name":" 全面","value":" 15"},
            {"name":" 搞定","value":" 12"}
        ],
    "cloudDiv":"worldDiv"
};

var createRandomItemStyle1 = function (params) {　　　　//此方法与下方配置中的第一个textStle下的color等同
    var colors = [\'#fda67e\', \'#81cacc\', \'#cca8ba\', "#88cc81", "#82a0c5", \'#fddb7e\', \'#735ba1\', \'#bda29a\', \'#6e7074\', \'#546570\', \'#c4ccd3\'];
    return colors[parseInt(Math.random() * 10)];
}

var createRandomItemStyle2 = function () {
    var colorArr = [\'#fda67e\', \'#81cacc\', \'#cca8ba\', "#88cc81", "#82a0c5", \'#fddb7e\', \'#735ba1\', \'#bda29a\', \'#6e7074\', \'#546570\', \'#c4ccd3\'];
    var flag = parseInt(Math.random() * 10);
    return {
        normal: {
            fontFamily: \'微软雅黑\',
            color:colorArr[flag]
        }
    };
}
function _setWordCloud (cloudData) {
    var option = {
        series: [
            {
                type: \'wordCloud\',
                shape: \'ellipse\',
                gridSize: 8,
                textStyle: {
                    normal: {
                        fontFamily: \'微软雅黑\',
                        color: function () {
                            var colors = [\'#fda67e\', \'#81cacc\', \'#cca8ba\', "#88cc81", "#82a0c5", \'#fddb7e\', \'#735ba1\', \'#bda29a\', \'#6e7074\', \'#546570\', \'#c4ccd3\'];
                            return colors[parseInt(Math.random() * 10)];
                        }
                    }
                },

                /*注释一：*/
                // textStyle:createRandomItemStyle2(),


                /*注释二：*/
                /*textStyle: {
                normal: {
                        fontFamily: \'微软雅黑\',
                        color: createRandomItemStyle1()
                    }
                },*/
                data: cloudData
            }
        ]
    };
    return option;
};

//词云图初始化
function initWordCloud(wordCloudData) {
    var option = _setWordCloud(wordCloudData.cloudData);
    var myChart = echarts.init(document.getElementById(wordCloudData.cloudDiv));
    myChart.setOption(option);
}

initWordCloud(dataCloud);