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Javascript Articles
Page 6 of 534
How 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"; }
Read MoreHow to set the starting position of a background image in JavaScript DOM?
To set the starting position of a background image in JavaScript, use the backgroundposition property. It allows you to set the position of the image.ExampleYou can try to run the following code to learn how to set all the position of a background image with JavaScript − body { background-repeat: no-repeat; } Click to Set background image function display() { document.body.style.backgroundImage = "url('https://www.tutorialspoint.com/html5/images/html5-mini-logo.jpg')"; document.body.style.backgroundPosition="top right"; }
Read MoreHow to set all the border bottom properties in one declaration in JavaScript DOM?
To set the border bottom properties in one declaration in JavaScript, use the borderBottom property. It allows you to set the border-bottom-width, border-bottom-style, and border-bottom-color.ExampleYou can try to run the following code to learn how to set border bottom properties − #box { border: 2px dashed blue; width: 120px; height: 120px; } Set border bottom color Demo Text Demo Text function display() { document.getElementById("box").style.borderBottom = "thin dashed #000000"; }
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