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Articles by Abhinaya
39 articles
How to check whether a string contains a substring in JavaScript?
JavaScript provides us with different methods to check whether a string contains a substring or not. In this article, we use the following three methods for this purpose-String search() methodString indexOf() methodString includes() methodLet’s explore in detail each method.1. String search() methodThe string search method can be used to search a text (using regular expression) in a string.It matches the string against a regular expression and returns the index (position) of the first match.It returns -1 if no match is found. It’s case-sensitive.The string search() method is an ES1 feature. It is fully supported in all browsers.Syntaxstring.search(searchValue)searchValue is a regular ...
Read MoreHow to add a unique id for an element in HTML?
Use the id attribute in HTML to add the unique id of an element.ExampleYou can try to run the following code to implement id attribute − Tutorialspoint We provide Tutorials! More... function display() { document.getElementById("myid").innerHTML = "We provide learning videos as well"; }
Read MoreWhy aren't variable-length arrays part of the C++ standard?
Having to create a potential large array on the stack, which usually has only little space available, isn't good. If you know the size beforehand, you can use a static array. And if you don't know the size beforehand, you will write unsafe code. Variable-length arrays can not be included natively in C++ because they'll require huge changes in the type system.An alternative to Variable-length arrays in C++ is provided in the C++ STL, the vector. You can use it like −Example#include #include using namespace std; int main() { vector vec; vec.push_back(1); vec.push_back(2); vec.push_back(3); ...
Read MoreHow to set the length of the item relative to the rest with JavaScript?
Use the flex property in JavaScript to set the length of the item relative to the rest. You can try to run the following code to implement flex property with JavaScript −Example #box { border: 1px solid #000000; width: 300px; height: 400px; display: flex; } DIV1 DIV2 DIV3 Set function display() { var a = document.getElementById("box"); var b = a.getElementsByTagName("DIV"); var j ; for (j = 0; j < b.length; j++) { b[j].style.flex = "1"; } }
Read MoreHow to create JavaScript regexes using string variables?
Yes, use new RegExp(pattern, flags) to achieve this in JavaScript.You can try to run the following code to implement JavaScript regex using string variables − var str = 'HelloWorld'.replace( new RegExp('hello', 'i'), '' ); document.write(str);
Read MoreHow to set the bottom padding of an element with JavaScript?
To set the bottom padding, use the paddingBottom property in JavaScript.ExampleYou can try to run the following code to return the bottom padding of an element with JavaScript − #box { border: 2px solid #FF0000; width: 150px; height: 70px; } This is demo text. Bottom padding function display() { document.getElementById("box").style.paddingBottom = "100px"; }
Read MoreWith JavaScript how can I find the name of the web browser, with version?
To find the name of the web browser, with version, you need to try the following code −Example Browser Detection Example
Read MoreHow do you launch the JavaScript debugger in Google Chrome?
To launch JavaScript debugger in Google Chrome, try any of the following ways,Press Ctrl + Shift + JGo to Settings and click More Tools. After that, click Developer Tools.For more, refer the official website of Chrome Dev Tool,
Read MoreHow can I display MySQL query result vertically?
With the use of ego, \G option at end of a statement, we can get the result set in vertical format. Consider the following example −mysql> Select * from Student where name = 'Aarav'\G *************************** 1. row *************************** Name: Aarav RollNo: 150 Grade: M.SC 1 row in set (0.00 sec)
Read MoreHow MySQL prevents unauthorized clients from accessing the database system?
MySQL implements a sophisticated access control and privilege system that allows us to create comprehensive access rules for handling client operations and effectively preventing unauthorized clients from accessing the database system.The MySQL access control has two stages when a client connects to the server −Connection verification A client, which connects to the MySQL database server, needs to have a valid username and password. In addition, the host from that the client connects needs to match with the host within the MySQL grant table.Request verificationonce a connection is established successfully, for each statement issued by the client, MySQL checks whether the client ...
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