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The HTML DOM Anchor href property is used to set or return the href attribute. It returns the url of the link.Following is the syntax to set the anchor href property−anchorObj.href = URLAbove, URL is the url of the link. It can be an absolute, relative or anchor link with a hash.Following is the syntax to return the anchor href property−anchorObj.hrefLet us now see an example to implement the DOM Anchor href property−Example Live Demo Company Our Team Display href Part Display Host Part Display Hostname function display() { var a = document.getElementById("mylink").href; ... Read More
Rhombus is a simple quadrilateral whose four sides all have the same length. And perimeter of rhombus can be found by two methods.Adding all side.Using the diagonalsA quadrilateral has two diagonal and based on the length of diagonals the area and perimeter of the quadrilateral can be found.To find the perimeter of a rhombus using its diagonals is 2{√(d1)2 + (d2)2 }LOGIC − To find the perimeter of a rhombus using its diagonals. You need the formula 2{√(d1)2 + (d2)2 } for this in your code you need to use the math class that supports the use of squareRoot and ... Read More
The HTML DOM Input Date disabled property sets/returns whether Input Date is enabled or disabled.SyntaxFollowing is the syntax −Returning boolean value - true/falseinputDateObject.disabledSetting disabled to booleanValueinputDateObject.disabled = booleanValueBoolean ValueHere, “booleanValue” can be the following −booleanValueDetailstrueIt defines that the input date is disabled.falseIt defines that the input date is not disabled and it is also the default value.ExampleLet us see an example of Input Date disabled property − Live Demo Input Date Disabled Date Select: Enable Date Input var divDisplay = document.getElementById("divDisplay"); var inputDate = document.getElementById("dateSelect"); divDisplay.textContent = 'Date Input disabled: ... Read More
The HTML DOM Input Time required property determines whether Input Time is compulsory to set or not.SyntaxFollowing is the syntax −Returning boolean value - true/falseinputTimeObject.requiredSetting required to booleanValueinputTimeObject.required = booleanValueBoolean ValuesHere, “booleanValue” can be the following −booleanValueDetailstrueIt is compulsory to set the time field to submit form.falseIt is the default value and to set time field is not compulsory.ExampleLet us see an example of Input Time required property − Live Demo Input Time required form { width:70%; margin: 0 auto; text-align: center; } * { ... Read More
Here we will see the Hygienic Macros in C. We know the usage of macros in C. But sometimes, it does not return the desired results because of accidental capture of identifiers.If we see the following code, we can see that it is not working properly.Example#include #define INCREMENT(i) do { int a = 0; ++i; } while(0) main(void) { int a = 10, b = 20; //Call the macros two times for a and b INCREMENT(a); INCREMENT(b); printf("a = %d, b = %d", a, b); }After preprocessing the code will be like this −Example#include #define ... Read More
This example demonstrate about How to determine if an activity has been called by a Notification in AndroidStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. Step 3 − Add the following code to src/MainActivity.package app.tutorialspoint.com.notifyme ; import android.app.NotificationChannel ; import android.app.NotificationManager ; import android.app.PendingIntent ; import android.content.Intent ; import android.os.Bundle ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ; import android.util.Log ; import android.view.View ; public class MainActivity extends AppCompatActivity { public ... Read More
Let us first create a table with rows and columns −String data[][] = { {"Australia", "5", "1"}, {"US", "10", "2"}, {"Canada", "9", "3"}, {"India", "7", "4"}, {"Poland", "2", "5"}, {"SriLanka", "5", "6"} }; String col [] = {"Team", "Selected Players", "Rank"}; DefaultTableModel tableModel = new DefaultTableModel(data, col); JTable table = new JTable(tableModel);Now, we will disable resizing of columns by dragging headers −table.getTableHeader().setResizingAllowed(false);The following is an example to disallow resizing a column by dragging between headers in a JTable: −Examplepackage my; import java.awt.Dimension; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JRootPane; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.table.DefaultTableModel; public ... Read More
PHP offers different kinds of operators having distinctive functionalities. Operators enable us to perform arithmetic activities, string concatenation, compare values and to perform boolean operations, more...In this article, we will learn string operators given by PHP. Let's first learn the types of string operators in php. There are two string operators provided by PHP. 1.Concatenation Operator ("."): This operator combines two string values and returns it as a new string. 2.Concatenating Assignment operator (".="): This operation attaches the argument on the right side to the argument on the left side. Let's demonstrate the utility of the above operators by following examples.Example:Output ... Read More
To get particular field as a result in MongoDB, you can use findOne(). Following is the syntax −db.yourCollectionName.findOne({"yourFieldName1":yourValue}, {yourFieldName2:1});Let us first create a collection with documents −> db.particularFieldDemo.insertOne({"EmployeeName":"John Smith", "EmployeeAge":26, "EmployeeTechnology":"MongoDB"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd9b4abb50a6c6dd317ada2") } > db.particularFieldDemo.insertOne({"EmployeeName":"Chris Brown", "EmployeeAge":28, "EmployeeTechnology":"Java"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd9b4d2b50a6c6dd317ada3") } > db.particularFieldDemo.insertOne({"EmployeeName":"David Miller", "EmployeeAge":30, "EmployeeTechnology":"MySQL"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd9b4e8b50a6c6dd317ada4") } > db.particularFieldDemo.insertOne({"EmployeeName":"John Doe", "EmployeeAge":31, "EmployeeTechnology":"C++"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd9b527b50a6c6dd317ada5") }Following is the query to display all documents from a collection with the help of ... Read More
The form attribute of the element is used to specify the forms wherein the button belongs to.Following is the syntax −The id above is the if of the form wherein the button belongs to.Let us now see an example to implement the form attribute of the element−Example Live Demo Points Player: Rank: Points: Click to Submit This will produce the following output. The button is part of the form−In the above example, we have set a form and added form elements− ... Read More