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HTML Articles
Page 135 of 151
Is it a good practice to place all declarations at the top in JavaScript?
Yes, it is a good practice to place all the JavaScript declarations at the top. Let’s see an example −Example JavaScript String match() Method // all the variables declared at top var str, re, found; str = "For more information, see Chapter 3.4.5.1"; re = /(chapter \d+(\.\d)*)/i; found = str.match( re ); document.write(found ); The following are the valid reasons −Gives a single place to check for all the variables.Helps in avoiding global variablesRe-declarations are avoided.The code is easy to read for others as well.
Read MoreWhat will happen if a semicolon is misplaced in JavaScript?
If a semicolon is misplaced in JavaScript, then it may lead to misleading results. Let’s see an example, wherein the if statement condition is false, but due to misplaced semi-colon, the value gets printed.Example var val1 = 10; if (val1 == 15) { document.write("Prints due to misplaced semi-colon: "+val1); } var val2 = 10; if (val2 == 15) { // this won't get printed document.write(val2); }
Read MoreHow to use the formmethod attribute in HTML?
The formmethod attribute is used to define the HTTP technique for sending form information. This method is usedwith input type submit a picture. It overrides the method attribute of HTML forms.ExampleYou can try to run the following code to learn how to use the formmethod attribute in HTML. HTML formmethod attribute Student Name Student Subject
Read MoreWhy do we use the novalidate attribute in HTML?
The novalidate attribute in HTML is used to signify that the form won’t get validated on submit. It is a Boolean attribute and useful if you want the user to save the progress of form filing. If the form validation is disabled, the user can easily save the form and continue & submit the form later. While continuing, the user does not have to first validate all the entries.ExampleYou can try to run the following code to learn how to use novalidate attribute in HTML. In the following example, if you will add text in the field, then it won’t show ...
Read MoreWhich is the best tutorial site to learn HTML?
HTML stands for Hyper Text Markup Language, which is the most widely used language on Web to develop web pages. HTML was created by Berners-Lee in late 1991 but "HTML 2.0" was the first standard HTML specification which was published in 1995. HTML 4.01 was a major version of HTML and it was published in late 1999. However, HTML 4.01 version is widely used but currently we are having HTML-5 version, which is an extension to HTML 4.01, and this version published in 2012.To learn HTML, refer HTML tutorial. It explains the below given HTML concepts perfectly:HTML Basic TagsElementsAttributesHTML Phrase ...
Read MoreParse HTML with PHP's HTML DOMDocument
The text inside a tag inside class="text" inside with class="main" can be obtained with the following code −Example$html = nodeValue)); }OutputThis will produce the following output −string ‘This is text 1’ (length=14) string ‘This is text 2' (length=14)
Read MoreHow to use a novalidate attribute in HTML?
The novalidate attribute in HTML is used to signify that the form won't get validated on submit. It is a Boolean attribute. You can try to run the following code to learn how to use novalidate attribute in HTML. In the following example, if you will add text in the field, then it won't show an error. Example HTML novalidate attribute Student Name Rank
Read MoreHTML5 Canvas layer disappears on mouse click in Fabric.js and Firefox stops responding when creating a canvas for the image?
If the HTML5 Canvas layer disappears on mouse click in Fabric.js and Firefox stops responding when creating a canvas to the image, then there is a way to drag and drop images from your computer to canvas using Fabric.This can be done by making image draggable property to true by this way −
Read MorePhonegap + Windows Phone 8 : HTML5 viewport meta & scaling issue
Whenever you face such issue, it would mean you have not written the CSS properly.Just add the following in CSS −* { zoom:1; -ms-content-zooming:none; }For some code, even the following works −@viewport { width:320px; } @-ms-viewport { width:320px; zoom-user:fixed; max-zoom:1; min-zoom:1; }
Read MorePrevent iPhone from zooming in web-app with HTML \\n
Giving a meta tag attribute "user-scalable=no" will restrict the user from zooming elsewhere. Prevent zooming all together by adding this meta tag to your head tag. This tells the mobile browser to use the same width scale and will not allow the user to zoom in at all, hence also disables that annoying behavior. However, some might argue that this is not a very user-friendly way to handle the problem.The element, used along with one or more elements, creates a drop-down list of options for a web form. The element creates the list and each element is ...
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