Chart JS - Use time for xAxes
If the xAxis label is in date format use this code
time:
{
format: 'MM',
unit: 'month',
displayFormats: { month: 'MM' },
max: '2017-10-09 18:43:53',
min: '2017-10-02 18:43:53'
}
If the xAxis label is as what u used numerals use
time:
{
format: 'MM',
unit: 'month',
parser:'MM',
displayFormats: { month: 'MM' },
max: '2017-10-09 18:43:53',
min: '2017-00-02 18:43:53'
}
The dataset should be an array of objects with properties x for time and y for value.
$(document).ready(function() {
var data = [{
x: new moment().add(-10, "months"),
y: Math.random() * 100
},
{
x: new moment().add(-8, "months"),
y: Math.random() * 100
},
{
x: new moment().add(-6, "months"),
y: Math.random() * 100
},
{
x: new moment().add(-4, "months"),
y: Math.random() * 100
},
{
x: new moment().add(-2, "months"),
y: Math.random() * 100
},
{
x: new moment().add(-0, "months"),
y: Math.random() * 100
},
];
new Chart(document.getElementById("chartBox"), {
type: 'line',
data: {
datasets: [{
data: data,
borderColor: "#3e95cd",
fill: false
}]
},
options: {
scales: {
xAxes: [{
type: 'time'
}]
},
legend: false
}
});
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.18.1/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.0/Chart.bundle.min.js"></script>
<canvas id="chartBox"></canvas>Fiddle
Since you wish to use time for x-axis, your labels array should be an array of date/time string (labels array is correspondent to x-axis).
You would also need to set the parser property (to parse the date/time correctly), and x-axis' ticks source to data (to properly generate x-axis ticks).
UPDATE
If you only have a min and max date then, you can create a nice little plugin to populate the labels (date) array dynamically, as such :
plugins: [{
beforeInit: function(chart) {
var time = chart.options.scales.xAxes[0].time, // 'time' object reference
// difference (in days) between min and max date
timeDiff = moment(time.max).diff(moment(time.min), 'd');
// populate 'labels' array
// (create a date string for each date between min and max, inclusive)
for (i = 0; i <= timeDiff; i++) {
var _label = moment(time.min).add(i, 'd').format('YYYY-MM-DD HH:mm:ss');
chart.data.labels.push(_label);
}
}
}]
note: moment.js is used to make calculations easier.
ᴡᴏʀᴋɪɴɢ ᴇxᴀᴍᴘʟᴇ ⧩
( for demonstration purposes, I've changed the time unit to day )
$(document).ready(function() {
new Chart(document.getElementById("chartBox"), {
type: 'line',
data: {
datasets: [{
data: [12, 19, 3, 5, 2, 3, 32, 15],
label: "",
borderWidth: 2,
borderColor: "#3e95cd",
fill: false,
pointRadius: 0
}]
},
options: {
scales: {
xAxes: [{
type: 'time',
time: {
parser: 'YYYY-MM-DD HH:mm:ss',
unit: 'day',
displayFormats: {
day: 'ddd'
},
min: '2017-10-02 18:43:53',
max: '2017-10-09 18:43:53'
},
ticks: {
source: 'data'
}
}]
},
legend: {
display: false
},
animation: {
duration: 0,
},
hover: {
animationDuration: 0,
},
responsiveAnimationDuration: 0
},
plugins: [{
beforeInit: function(chart) {
var time = chart.options.scales.xAxes[0].time, // 'time' object reference
timeDiff = moment(time.max).diff(moment(time.min), 'd'); // difference (in days) between min and max date
// populate 'labels' array
// (create a date string for each date between min and max, inclusive)
for (i = 0; i <= timeDiff; i++) {
var _label = moment(time.min).add(i, 'd').format('YYYY-MM-DD HH:mm:ss');
chart.data.labels.push(_label);
}
}
}]
});
});<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/moment@latest/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.0/Chart.min.js"></script>
<canvas id="chartBox"></canvas>