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multiline chart

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v3.min.js"></script>
  <script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
  <style>
  /*multi line chart*/
.chart-wrapper .inner-wrapper {
  position: relative;

width: 100%;
}

.chart-wrapper .outer-box {
  position: absolute;
  top:15px;
  bottom: 0;
  left: 0;
  right: 0;
}

.chart-wrapper .inner-box {
  width: 100%;
  height: 100%;
}

.chart-wrapper text {
  font-family: 'Roboto', sans-serif;
  font-size: 14px;
}

.chart-wrapper p {
  font-size: 16px;
  margin-top: 5px;
  margin-bottom: 40px;
}

.chart-wrapper .axis path,
.chart-wrapper .axis line {
  fill: none;

shape-rendering: crispEdges;
}

.chart-wrapper .axis path {
  stroke-width: 1px;
}

.chart-wrapper .line {
  fill: none;
  stroke: steelblue;
  stroke-width: 3.5px;
}

.chart-wrapper .legend {
  display: flex;
  padding: 10px 50px;
  text-align: center;
}

.chart-wrapper .legend>div {
  margin: 0px 25px 10px 0px;
  flex-grow: 0;
}

.chart-wrapper .legend p {
  display: inline;
  font-size: 0.8em;
  font-family: 'Roboto', sans-serif;
  font-weight: 600;
}

.chart-wrapper .legend .series-marker {
  height: 1em;
  width: 1em;
  border-radius: 35%;
  background-color: crimson;
  display: inline-block;
  margin-right: 4px;
  margin-bottom: -0.16rem;
}

.chart-wrapper .overlay {
  fill: none;
  pointer-events: all;
}

.chart-wrapper .focus circle {
  fill: #fff;
  stroke: crimson;
  stroke-width: 3px;
  fill-opacity: 15%;
}

.chart-wrapper .focus rect {
  fill: lightblue;
  opacity: 0.4;
  border-radius: 2px;
}

.chart-wrapper .focus.line {
  stroke: steelblue;
  stroke-dasharray: 2, 5;
  stroke-width: 2;
  opacity: 0.5;
}

@media (max-width:500px) {
  /*.chart-wrapper .line {
    stroke-width: 2px;
  }*/
  .chart-wrapper .legend {
      font-size: 14px;
  }
}

/*line chart responsive css*/
.focus_animate{ position:absolute;
              z-index:2;}
.focus_animate circle {
  transition: all .7s ease-in-out;
  animation: move 1s ease-in-out infinite;
  fill:#f39c12;stroke-width:3;stroke:rgb(0,0,0);

}
  </style>
</head>

<body>
   <div class="chart-wrapper" id="chart-line1"></div>
  <script>
    var data = [{
        "year": 1980,
        "data1": 70,
        "data2": 52,
        "data3": 145,
        "data4": 75
    },
    {
        "year": 1981,
        "data1": 77,
        "data2": 51,
        "data3": 156,
        "data4": 80
    },
    {
        "year": 1982,
        "data1": 81,
        "data2": 55,
        "data3": 169,
        "data4": 79
    },
    {
        "year": 1983,
        "data1": 78,
        "data2": 55,
        "data3": 171,
        "data4": 91
    },
    {
        "year": 1984,
        "data1": 80,
        "data2": 55,
        "data3": 187,
        "data4": 102
    },
    {
        "year": 1985,
        "data1": 79,
        "data2": 53,
        "data3": 199,
        "data4": 103
    },
    {
        "year": 1986,
        "data1": 79,
        "data2": 54,
        "data3": 204,
        "data4": 102
    },
    {
        "year": 1987,
        "data1": 78,
        "data2": 53,
        "data3": 218,
        "data4": 104
    },
    {
        "year": 1988,
        "data1": 75,
        "data2": 51,
        "data3": 232,
        "data4": 105
    },
    {
        "year": 1989,
        "data1": 78,
        "data2": 48,
        "data3": 233,
        "data4": 106
    },
    {
        "year": 1990,
        "data1": 76,
        "data2": 51,
        "data3": 233,
        "data4": 112
    },
    {
        "year": 1991,
        "data1": 73,
        "data2": 55,
        "data3": 232,
        "data4": 111
    },
    {
        "year": 1992,
        "data1": 70,
        "data2": 52,
        "data3": 240,
        "data4": 122
    },
    {
        "year": 1993,
        "data1": 69,
        "data2": 50,
        "data3": 256,
        "data4": 122
    },
    {
        "year": 1994,
        "data1": 74,
        "data2": 50,
        "data3": 273,
        "data4": 131
    },
    {
        "year": 1995,
        "data1": 71,
        "data2": 51,
        "data3": 286,
        "data4": 128
    },
    {
        "year": 1996,
        "data1": 71,
        "data2": 53,
        "data3": 283,
        "data4": 129
    },
    {
        "year": 1997,
        "data1": 76,
        "data2": 51,
        "data3": 292,
        "data4": 126
    },
    {
        "year": 1998,
        "data1": 81,
        "data2": 49,
        "data3": 298,
        "data4": 132
    },
    {
        "year": 1999,
        "data1": 80,
        "data2": 53,
        "data3": 313,
        "data4": 142
    },
    {
        "year": 2000,
        "data1": 77,
        "data2": 59,
        "data3": 321,
        "data4": 152
    },
    {
        "year": 2001,
        "data1": 82,
        "data2": 63,
        "data3": 338,
        "data4": 162
    },
    {
        "year": 2002,
        "data1": 88,
        "data2": 67,
        "data3": 337,
        "data4": 171
    },
    {
        "year": 2003,
        "data1": 90,
        "data2": 69,
        "data3": 338,
        "data4": 177
    },
    {
        "year": 2004,
        "data1": 90,
        "data2": 75,
        "data3": 338,
        "data4": 183
    },
    {
        "year": 2005,
        "data1": 92,
        "data2": 80,
        "data3": 351,
        "data4": 180
    },
    {
        "year": 2006,
        "data1": 93,
        "data2": 87,
        "data3": 367,
        "data4": 188
    },
    {
        "year": 2007,
        "data1": 91,
        "data2": 91,
        "data3": 375,
        "data4": 186
    },
    {
        "year": 2008,
        "data1": 90,
        "data2": 96,
        "data3": 374,
        "data4": 195
    },
    {
        "year": 2009,
        "data1": 97,
        "data2": 97,
        "data3": 385,
        "data4": 207
    },
    {
        "year": 2010,
        "data1": 104,
        "data2": 101,
        "data3": 401,
        "data4": 206
    },
    {
        "year": 2011,
        "data1": 111,
        "data2": 106,
        "data3": 403,
        "data4": 205
    },
    {
        "year": 2012,
        "data1": 115,
        "data2": 105,
        "data3": 417,
        "data4": 204
    },
    {
        "year": 2013,
        "data1": 117,
        "data2": 108,
        "data3": 420,
        "data4": 211
    },
    {
        "year": 2014,
        "data1": 121,
        "data2": 107,
        "data3": 436,
        "data4": 217
    },
    {
        "year": 2015,
        "data1": 121,
        "data2": 104,
        "data3": 449,
        "data4": 216
    }
];
function makeLineChart(dataset, xName, yObjs, axisLables) {
    var chartObj = {};
    var color = d3.scale.category10();
    chartObj.xAxisLable = axisLables.xAxis;
    chartObj.yAxisLable = axisLables.yAxis;
    /*
     yObjsects format:
     {y1:{column:'',name:'name',color:'color'},y2}
     */

chartObj.data = dataset;
    chartObj.margin = {
        top: 15,
        right: 60,
        bottom: 30,
        left: 50
    };
    chartObj.width = window.innerWidth - chartObj.margin.left - chartObj.margin.right;
    chartObj.height = 420 - chartObj.margin.top - chartObj.margin.bottom;

// So we can pass the x and y as strings when creating the function
    chartObj.xFunct = function (d) {
        return d[xName]
    };

// For each yObjs argument, create a yFunction
    function getYFn(column) {
        return function (d) {
            return d[column];
        };
    }

// Object instead of array
    chartObj.yFuncts = [];
    for (var y in yObjs) {
        yObjs[y].name = y;
        yObjs[y].yFunct = getYFn(yObjs[y].column); //Need this  list for the ymax function
        chartObj.yFuncts.push(yObjs[y].yFunct);
    }

//Formatter functions for the axes
    chartObj.formatAsNumber = d3.format(".0f");
    chartObj.formatAsDecimal = d3.format(".2f");
    chartObj.formatAsCurrency = d3.format("$.2f");
    chartObj.formatAsFloat = function (d) {
        if (d % 1 !== 0) {
            return d3.format(".2f")(d);
        } else {
            return d3.format(".0f")(d);
        }

};

chartObj.xFormatter = chartObj.formatAsNumber;
    chartObj.yFormatter = chartObj.formatAsFloat;

chartObj.bisectYear = d3.bisector(chartObj.xFunct).left; //< Can be overridden in definition

//Create scale functions
    chartObj.xScale = d3.scale.linear().range([0, chartObj.width]).domain(d3.extent(chartObj.data, chartObj.xFunct)); //< Can be overridden in definition

// Get the max of every yFunct
    chartObj.max = function (fn) {
        return d3.max(chartObj.data, fn);
    };
    chartObj.yScale = d3.scale.linear().range([chartObj.height, 0]).domain([0, d3.max(chartObj.yFuncts.map(chartObj.max))]);

chartObj.formatAsYear = d3.format("");

//Create axis
    chartObj.xAxis = d3.svg.axis().scale(chartObj.xScale)
            .orient("bottom")
            .tickFormat(chartObj.xFormatter)
            // grid case
            .innerTickSize(-chartObj.height)
            .outerTickSize(0)
            .tickPadding(10); //< Can be overridden in definition

chartObj.yAxis = d3.svg.axis().scale(chartObj.yScale)
            .orient("left")
            .tickFormat(chartObj.yFormatter)
            // grid case
            .innerTickSize(-chartObj.width).outerTickSize(0).tickPadding(10); //< Can be overridden in definition

// Build line building functions
    function getYScaleFn(yObj) {
        return function (d) {
            return chartObj.yScale(yObjs[yObj].yFunct(d));
        };
    }
    for (var yObj in yObjs) {
        yObjs[yObj].line = d3.svg.line().interpolate("cardinal").x(function (d) {
            return chartObj.xScale(chartObj.xFunct(d));
        }).y(getYScaleFn(yObj));
    }

chartObj.svg;

// Change chart size according to window size
    chartObj.update_svg_size = function () {
        chartObj.width = window.innerWidth - (chartObj.margin.left + chartObj.margin.right);

chartObj.height = parseInt(420, 10) - (chartObj.margin.top + chartObj.margin.bottom);

/* Update the range of the scale with new width/height */
        chartObj.xScale.range([0, chartObj.width]);
        chartObj.yScale.range([chartObj.height, 0]);

if (!chartObj.svg) {
            return false;
        }

/* Else Update the axis with the new scale */
        chartObj.svg.select('.x.axis').attr("transform", "translate(0," + chartObj.height + ")").call(chartObj.xAxis);
        chartObj.svg.select('.x.axis .label').attr("x", chartObj.width / 2);

chartObj.svg.select('.y.axis').call(chartObj.yAxis);
        chartObj.svg.select('.y.axis .label').attr("x", -chartObj.height / 2);

/* Force D3 to recalculate and update the line */
        for (var y in yObjs) {
            yObjs[y].path.attr("d", yObjs[y].line);
        }

d3.selectAll(".focus.line").attr("y2", chartObj.height);

chartObj.chartDiv.select('svg').attr("width", chartObj.width + (chartObj.margin.left + chartObj.margin.right)).attr("height", chartObj.height + (chartObj.margin.top + chartObj.margin.bottom));

chartObj.svg.select(".overlay").attr("width", chartObj.width).attr("height", chartObj.height);
        return chartObj;
    };

chartObj.bind = function (selector) {
        chartObj.mainDiv = d3.select(selector);
        // Add all the divs to make it centered and responsive
        chartObj.mainDiv.append("div").attr("class", "inner-wrapper").append("div").attr("class", "outer-box").append("div").attr("class", "inner-box");
        chartSelector = selector + " .inner-box";
        chartObj.chartDiv = d3.select(chartSelector);
        d3.select(window).on('resize.' + chartSelector, chartObj.update_svg_size);
        chartObj.update_svg_size();
        return chartObj;
    };

// Render the chart
    chartObj.render = function () {
        //Create SVG element
        chartObj.svg = chartObj.chartDiv.append("svg").attr("class", "chart-area").attr("width", chartObj.width + (chartObj.margin.left + chartObj.margin.right)).attr("height", chartObj.height + (chartObj.margin.top + chartObj.margin.bottom)).append(
                "g").attr("transform", "translate(" + chartObj.margin.left + "," + chartObj.margin.top + ")");

// Draw Lines
        for (var y in yObjs) {
            yObjs[y].path = chartObj.svg.append("path").datum(chartObj.data).attr("class", "line").attr("d", yObjs[y].line).style("stroke", color(y)).attr("data-series", y).on("mouseover", function () {
                focus.style("display", null);
            }).on("mouseout", function () {
                focus.transition().delay(700).style("display", "none");
            }).on("mousemove", mousemove);
        }

// Draw Axis
        chartObj.svg.append("g").attr("class", "x axis").attr("transform", "translate(0," + chartObj.height + ")").call(chartObj.xAxis).append("text").attr("class", "label").attr("x", chartObj.width / 2).attr("y", 30).style("text-anchor", "middle")
                .text(chartObj.xAxisLable);

chartObj.svg.append("g").attr("class", "y axis").call(chartObj.yAxis).append("text").attr("class", "label").attr("transform", "rotate(-90)").attr("y", -42).attr("x", -chartObj.height / 2).attr("dy", ".71em").style("text-anchor", "middle").text(
                chartObj.yAxisLable);

//Draw tooltips
        var focus = chartObj.svg.append("g").attr("class", "focus").style("display", "none");

for (var y in yObjs) {
            yObjs[y].tooltip = focus.append("g");
            yObjs[y].tooltip.append("circle").attr("r", 8);
            yObjs[y].tooltip.append("rect").attr("x", 8).attr("y", "-10").attr("width", 40).attr("height", '20');
            yObjs[y].tooltip.append("text").attr("x", 20).attr("dy", ".35em");
        }

// Year label
        focus.append("text").attr("class", "focus year").attr("x", 9).attr("y", 7);
        // Focus line
        focus.append("line").attr("class", "focus line").attr("y1", 0).attr("y2", chartObj.height);

//Draw legend
        var legend = chartObj.mainDiv.append('div').attr("class", "legend");
        for (var y in yObjs) {
            series = legend.append('div');
            series.append('div').attr("class", "series-marker").style("background-color", color(y));
            series.append('p').text(y);
            yObjs[y].legend = series;
        }

// Overlay to capture hover
        chartObj.svg.append("rect").attr("class", "overlay").attr("width", chartObj.width).attr("height", chartObj.height).on("mouseover", function () {
            focus.style("display", null);
        }).on("mouseout", function () {
            focus.style("display", "none");
        }).on("mousemove", mousemove);

return chartObj;

focus.select(".focus.line").attr("transform", "translate(" + chartObj.xScale(chartObj.xFunct(d)) + ")").attr("y1", minY);
            focus.select(".focus.year").text("Year: " + chartObj.xFormatter(chartObj.xFunct(d)));
        }

};
    return chartObj;
}
var data1 = data;
data1.forEach(function (d) {
    d.year = +d.year;
    d.data1 = +d.data1;
    d.data2 = +d.data2;
    d.data3 = +d.data3;
    d.data4 = +d.data4;
});

</script>
</body>

https://d3js.org/d3.v3.min.js

https://code.jquery.com/jquery-1.12.4.min.js