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Javascript Articles
Page 9 of 534
How to get current date/time in seconds in JavaScript?
To convert time in seconds, firstly get the current time. Then, multiply the hours to 3600 and minutes to 60; rest you can see below −(hours*3600) + (min*60) + secExampleYou can try to run the following code to get the current time in seconds − JavaScript Get Seconds var dt = new Date(); var sec = dt.getSeconds(); document.write("Seconds: " + sec); var min = dt.getMinutes(); document.write("Minutes: " + min); var hrs = dt.getHours(); document.write("Hours: " + hrs); var total_seconds = (hrs*3600) + (min*60) + sec; document.write("Total seconds: " + total_seconds) ; OutputSeconds: 35 Minutes: 37 Hours: 9 Total seconds: 34655
Read MoreHow to get Euler's constant value in JavaScript?
To get Euler’s constant value in JavaScript, use the Math E property. This is a Euler's constant and the base of natural logarithms, approximately 2.718.ExampleYou can try to run the following code to get Euler’s constant value in JavaScript − JavaScript Math E Property var property_value = Math.E document.write("Property Value is :" + property_value); OutputProperty Value is :2.718281828459045
Read MoreHow to get Natural logarithm of 2 in JavaScript?
To get the Natural logarithm of 2, use the Math.LN2 property in JavaScript. It returns the natural logarithm of 2, which is approximately 0.693.ExampleYou can try to run the following code to get Natural logarithm of 2 − JavaScript Math LN2 Property var property_value = Math.LN2 document.write("Property Value is : " + property_value); OutputProperty Value is : 0.6931471805599453
Read MoreHow to create a two dimensional array in JavaScript?
A two-dimensional array has more than one dimension, such as myarray[0][0] for element one, myarray[0][1] for element two, etc. To create a two-dimensional array in JavaScript, you can try to run the following code −Example var myarray=new Array(3); for (i=0; i
Read MoreHow to show all the options from a dropdown list with JavaScript?
To show all the options from a dropdown list, use the options property. The property allows you to get all the options with length property.ExampleYou can try to run the following code to get all the options from a drop-down list. One Two Three Click the button to get all the options function display() { var a, i, options; a = document.getElementById("selectNow"); options = ""; for (i = 0; i < a.length; i++) { options = options + " " + a.options[i].text; } document.write("DropDown Options: "+options); }
Read MoreHow to get the value of the type attribute of a link in JavaScript?
To get the value of the type attribute of a link in JavaScript, use the type property. The type attribute is used to tell that the document is html (text/html) or css (text/css), etc.ExampleYou can try to run the following code to get the value of the type attribute of a link. Qries var myVal = document.getElementById("anchorid").type; document.write("Value of type attribute: "+myVal);
Read MoreHow to work with document.embeds in JavaScript?
Use the document.embeds property in JavaScript to get the number of tags in a document.ExampleYou can try to run the following code to implement document.embeds property in JavaScript. JavaScript Example var num = document.embeds.length; document.write("How many embed tags: "+num);
Read MoreHow to work with document.images in JavaScript?
Use the document.images property in JavaScript to get the number of tags in a document.ExampleYou can try to run the following code to implement document.images property in JavaScript. JavaScript Example TutorialsPoint Tutorials var num = document.images.length; document.write("How many images? "+num);
Read MoreHow to set the shape of the border of the top-right corner with JavaScript?
To set the shape of the border of the top-right corner in JavaScript, use the borderTopRightRadius property. Set border radius using this property.ExampleYou can try to run the following code to learn how to set the shape of the top-right border with JavaScript. #box { border: thick solid gray; width: 300px; height: 200px } Demo Text Change top right border radius function display() { document.getElementById("box").style.borderTopRightRadius = "20px"; }
Read MoreHow to set all the background properties in one declaration with JavaScript DOM?
To set the background in JavaScript, use the background property. It allows you to set the background color, image, position, etc.ExampleYou can try to run the following code to learn how to set all the background properties in a single declaration with JavaScript. Click to Set background function display() { document.body.style.background = "url('https://www.tutorialspoint.com/html5/images/html5-mini-logo.jpg') repeat right top"; }
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