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Javascript Articles
Page 133 of 534
What are the rules to be followed for Object Definitions in JavaScript?
In this tutorial, we will discuss the rules to follow for Object Definitions in JavaScript. JavaScript is an object-oriented scripting language. An object contains many properties. The property consists of a key and a value. The property is known as a method when this value is a function. Predefined objects are available in the browser. We can also define our objects. A real-life example of an object is a cup. The color, design, weight, and material are the main properties of a cup. The object name and the property name are case-sensitive. To define a property, we need to assign ...
Read MoreHow to fill columns with JavaScript?
In this tutorial, we will learn how we can fill columns with JavaScript. Use the columnFill property to fill columns. Fill it as auto to fill sequentially, or balance to equally divide content between columns. The columnFill property is the property that specifies how the columns should be filled, auto, balanced, or in any other manner. Syntax Following is the syntax to set the columnFill property in JavaScript − selectedElement.style.columnFill="value"; Here the selectedElement is the element to which you want to add the columnFill property, while using style is the way of adding any CSS property to an element ...
Read MoreIs there a way to print all methods of an object in JavaScript?
In this tutorial, we will learn how to print all methods of an object in JavaScript. An object's property with a function declaration is known as a JavaScript method. Methods are represented as object attributes and functions. We refer to actions carried out on objects as JavaScript methods. It is also possible to call the objects without using parentheses. This is a reference to the method's owner object. The method manipulates data that is part of a Class. The Object that was called into a method is implicitly passed. A function connected to an object attribute is called a method. ...
Read MoreHow to work with document.forms in JavaScript?
In this tutorial, let us discuss how to work with document.forms in JavaScript. The document.form property returns all the form tags in the document. The forms property is read-only. The form property is the Dom level 1 feature. Working with form attributes and elements Here let us learn to work with a form's properties, attributes, and elements. Users can follow the syntax below to work with the form's properties and elements. Syntax var forms = document.forms; let formLen = forms.length; let formId = forms[0].id || forms.item(0).id; let formItemId = forms[0].elements[0].id; let formItemVal = forms[0].elements[0].value; let formData = forms.namedItem("testForm").innerHTML; The ...
Read MoreHow to use unlimited arguments in a JavaScript function?
In this tutorial, let us discuss the methods to use unlimited arguments in a JavaScript function. The number of arguments in a JavaScript function is a bit tricky. If we specify three arguments should follow the correct order of the arguments. Let us discover the solution to this problem by introducing the methods to pass unlimited in a function, we can not pass more than three. Moreover, we arguments to a JavaScript function. Using ES5 Arguments Object Instead of converting the arguments object to an array, we can process the arguments object with the total number of arguments. Follow the ...
Read MoreHow to get the arccosine (in radians) of a number in JavaScript?
This tutorial will help you to find the arccosine in radians of a number in JavaScript. Cosine is the ratio of the adjacent side and the hypotenuse of the right-angled triangle which is defined by them. To get the cosine of a number, the Math.cos() function is used in JavaScript. The value returned will be between -1 and 1. This denotes the cosine of an angle. This will be in radians. The inverse of cosine is called Arc cosine. An angle's trigonometric Arc cosine value can be calculated using acos() method. This returns a value between 0.0 and pi. The ...
Read MoreHow to find the text visible on the button with JavaScript?
In this tutorial, we will discuss different approaches to find the text visible on the button with JavaScript. The text on a button shows what will happen if you click the button. To extract the text on the button, JavaScript provides us with the following two properties. Using the innerHTML Property Using the innerText Property Let us discuss both of the above properties in detail. Using the innerHTML Property The innerHTML property not only allows us to get the text inside any tag but also allows us to set the text to any tag. This property also allows ...
Read MoreHow to find the number of anchors with JavaScript?
In this tutorial, we will learn how to find the number of anchors used in an HTML document with JavaScript. Sometimes, During the development of a web page, the developer may need to add multiple links to the different buttons present on the webpage using multiple anchors for each button. In such a situation, if you want to find the number of anchor elements, you can use the anchors property. JavaScript allows us to use the anchors property to count the number of anchors ( elements) in an HTML document. Note − The document.anchors property is deprecated and no longer ...
Read MoreHow to find the name of the first form in a document with JavaScript?
In this tutorial, we will learn how to find the name of the first form in an HTML document. Sometimes, we use more than one form tags in the HTML document for different purposes. At that time, we can face difficulties in finding the specific element to add some more properties to it. In such conditions, we can use the forms property of the "document" interface to access all the elements present in the document individually as well as collectively Document.forms As we discussed above, the forms property is used to access all the forms present in the ...
Read MoreHow to find the min/max element of an Array in JavaScript?
In this tutorial, we will learn different ways of finding the maximum and minimum elements of an array in JavaScript. The minimum element is the smallest element among all the elements present in the array, while the maximum is the largest among them Below are the approaches we can use to find the min/max elements of an array. Traverse the whole Array Using the Math.min() and Math.max() Methods. Let us discuss these approaches with help of program examples. Approach 1: Traverse the whole Array In this approach, we will traverse the whole array using the for loop and ...
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