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Articles on Trending Technologies
Technical articles with clear explanations and examples
Why in JavaScript, “if ('0' == false)” is equal to false whereas it gives true in “if(0)” statement?
Let’s see the conditions one by one − if(‘0’ == false)It follows the following rule −If Type(y) is Boolean, return the result of the comparison x == ToNumber(y)The == does type coercion. This means an explicit type conversion is requested to match the type of the two operands. The left side '0' is converted to a number 0. On comparing the two numbers, and since 0 equals 0, the result is true. In this case, this does not work since it does not implies about the truish/falsy nature of the '0' string, since it got coerced before it was compared.if(0)This checks ...
Read MoreHow to create and apply CSS to JavaScript Alert box?
The standard alert box in JavaScript does not provide the option to apply CSS. To style your alert box, you need to create a custom one first. The custom alert box will be created using jQuery and styles will be applied to CSS.ExampleYou can try to run the following code to learn how to create and apply CSS to alert box −Live Demo function functionAlert(msg, myYes) { var confirmBox = $("#confirm"); confirmBox.find(".message").text(msg); ...
Read MoreHow to create HTML link that doesnt follow the link?
Use “nofollow” to create HTML link that doesn’t follow the link. In HTML, while adding an external link, you can set the attribute “rel” as “nofollow” or “dofollow” −The “nofollow” value tells the search engine − “Don't follow links on this page" or "Don't follow this specific link."Another WebsiteWhile using “nofollow”, the search engine won’t transfer anchor text across these link.
Read MoreHow to show image in alert box using JavaScript?
To show an image in alert box, try to run the following code. Here, an alert image is added to the custom alert box −ExampleLive Demo function functionAlert(msg, myYes) { var confirmBox = $("#confirm"); confirmBox.find(".message").text(msg); confirmBox.find(".yes").unbind().click(function() { confirmBox.hide(); }); confirmBox.find(".yes").click(myYes); ...
Read MoreHow to display JavaScript variable value in alert box?
To display JavaScript variable value in an alert box, try to run the following code −ExampleLive Demo function display() { var a = "Simple"; var b = "Learning"; alert(a +" Easy "+ b); }
Read MoreWhat is the difference between void, eval, and the Function constructor in JavaScript?
The void keywordThe void is an important keyword in JavaScript, which can be used as a unary operator that appears before its single operand, which may be of any type. This operator specifies an expression to be evaluated without returning a value.The syntax of the void can be either of the following two − The eval() functionThe JavaScript eval() is used to execute an argument. The code gets execute slower when the eval() method is used. It also has security implementations since it has a different scope of execution.ExampleHere’s how you can ...
Read MoreHow to make an anchor tag refer to nothing?
To make an anchor tag refer to nothing, use “javascript: void(0)”. The following link does nothing because the expression "0" has no effect in JavaScript. Here the expression "0" is evaluated, but it is not loaded back into the current document.ExampleLive Demo Click the following, This won't react at all... Click me!
Read MoreHow I can replace a JavaScript alert pop up with a fancy alert box?
To design a custom JavaScript alert box, try to run the following code. The code uses a JavaScript library jQuery and CSS to create a fancy alert box different from the standard JavaScript alert box −ExampleLive Demo function functionAlert(msg, myYes) { var confirmBox = $("#confirm"); confirmBox.find(".message").text(msg); confirmBox.find(".yes").unbind().click(function() { confirmBox.hide(); }); ...
Read MoreHow to create a modal popup using JavaScript and CSS?
Creating a modal popup means adding a dialog box, which generates on click of a button and close when user clicks anywhere outside of the popup.Here’s how a popup looks like below with header and a text. You can also add a footer to it −To create a modal popup using CSS and JavaScript, try to run the following code −ExampleLive Demo .popup { display: none; position: fixed; z-index: 1; ...
Read MoreExporting a Delivery unit in SAP HANA using HANA Studio
In SAP HANA system, you have to assign packages to Delivery unit. Once packages are assigned to export DU, you can see the list of DU’s by using Export option −Go to File → Export → Delivery Unit → Select the Delivery UnitYou can also select export location:Export to ServerExport to ClientThis means that a Delivery unit can be exported to HANA Server location or to a Client location as shown in the below snapshot. It also shows you list of all packages that will exported with Delivery unit you have selected from drop down list.
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