Category: JavaScript

Sometimes, we want to add items to an object through the .push() method with JavaScript.

In this article, we’ll look at how to add items to an object through the .push() method with JavaScript.

How to add items to an object through the .push() method with JavaScript?

To add items to an object through the .push() method with JavaScript, we should make sure push is called on array.

For instance, we write

const stuff = [];
stuff.push(element);

to call stuff.push with element to append element as the last element of the stuff` array.

Conclusion

To add items to an object through the .push() method with JavaScript, we should make sure push is called on array.

Sometimes, we want to change label color with Chart.js and JavaScript.

In this article, we’ll look at how to change label color with Chart.js and JavaScript.

How to change label color with Chart.js and JavaScript?

To change label color with Chart.js and JavaScript, we set the fontColor.

For instance, we write

const ctx = document.getElementById("barChart");
const myChart = new Chart(ctx, {
  type: "bar",
  data: {
    labels: ["label 1", "label 2"],
    datasets: [
      {
        label: "My Label",
        backgroundColor: "rgba(159,170,174,0.8)",
        borderWidth: 1,
        hoverBackgroundColor: "rgba(232,105,90,0.8)",
        hoverBorderColor: "orange",
        scaleStepWidth: 1,
        data: [4, 5],
      },
    ],
  },
  options: {
    legend: {
      labels: {
        fontColor: "blue",
        fontSize: 18,
      },
    },
    scales: {
      yAxes: [
        {
          ticks: {
            fontColor: "green",
            fontSize: 18,
            stepSize: 1,
            beginAtZero: true,
          },
        },
      ],
      xAxes: [
        {
          ticks: {
            fontColor: "purple",
            fontSize: 14,
            stepSize: 1,
            beginAtZero: true,
          },
        },
      ],
    },
  },
});

to set the fontColor of the labels by setting the fontColor in the options object property.

legend.labels has the options for the legend labels.

ticks has the styles for the ticks.

Conclusion

To change label color with Chart.js and JavaScript, we set the fontColor.

Sometimes, we want to use Lodash in all Vue component templates.

In this article, we’ll look at how to use Lodash in all Vue component templates.

How to use Lodash in all Vue component templates?

To use Lodash in all Vue component templates, we can add Lodash into Vue‘s prototype.

For instance, we write

import _ from "lodash";

Object.defineProperty(Vue.prototype, "$_", { value: _ });

to call Object.defineProperty with Vue.prototype, "$_", and { value: _ } to add the $_ property into Vue.prototype.

Then we can access Lodash with this.$_ or $_ in the component methods and template respectively.

Conclusion

To use Lodash in all Vue component templates, we can add Lodash into Vue‘s prototype.

Sometimes, we want to replace forward slash "/ " character in a JavaScript string.

In this article, we’ll look at how to replace forward slash "/ " character in a JavaScript string.

How to replace forward slash "/ " character in a JavaScript string?

To replace forward slash "/ " character in a JavaScript string, we can use the string replace method.

For instance, we write

const str = someString.replace(/\//g, "-");

to call someString.replace with the /\//g regex and '-' to replace all forward slashes with dashes.

The g flag makes replace replace all matches.

Conclusion

To replace forward slash "/ " character in a JavaScript string, we can use the string replace method.

Sometimes, we want to access elements by type in JavaScript.

In this article, we’ll look at how to access elements by type in JavaScript.

How to access elements by type in JavaScript?

To access elements by type in JavaScript, we use the querySelectorAll method.

For instance, we write

const els = document.querySelectorAll("input[type=text]");

to call querySelector to select all input elements with type attribute set to text.

A node list is returned with all the selected elements included.

Conclusion

To access elements by type in JavaScript, we use the querySelectorAll method.