/**
* 獲取一個新的chart配置項
* @param color rgba顏色
* @param type 圖表類型:line,bar,radar,polarArea,pie,doughnut
* @param title 顯示圖表的標(biāo)題
* @param label 圖表的標(biāo)簽，鼠標(biāo)移到圖表某個數(shù)據(jù)點時顯示的提示文字
* @param categories 一般是X軸的內(nèi)容
* @param data 一般是Y軸的數(shù)據(jù)
* @returns 返回圖表的配置參數(shù)
*/
function getNewConfig(color,type,title,label,categories,data)
{
var background = color;
var config = {
type: type,
options: {
responsive: true,
legend: {
display: false,
position:'bottom'
},
hover: {
mode: 'label'
},
scales: {
xAxes: [{
display: true,
scaleLabel: {
display: false,
labelString: 'Month'
}
}],
yAxes: [{
display: true,
scaleLabel: {
display: false,
labelString: 'Value'
}
}]
},
title: {
display: true,
text: title
}
}
};
var dataset = {
label: label,
data: data,
fill: false,
borderDash: [, ],
borderColor : background,
backgroundColor : background,
pointBorderColor : background,
pointBackgroundColor : background,
pointBorderWidth : 
};
var data = {
labels:categories,
datasets: [dataset]
};
config.data = data;
return config;
}

<canvas id="chart_weixinmember" height=""></canvas> 
var color = 'rgba(,,,.)';
var categories = ["--","--","--","--","--","--","--"];
var data = [,,,,,,];
var config = getNewConfig(color,'line','最近天微信會員增長情況','當(dāng)天新增微信會員',categories,data);
var ctx = document.getElementById("chart_weixinmember").getContext("d");
var weixinMemberCountChart = new Chart(ctx, config);