Check if a number is palindrome or not using javascript
Check if a number is palindrome or not using javascript Read More »
javascript
Basic array operations in Javascript
How to add elements at the start of an array in javascript? let list1 = [‘b’, ‘c’]; //using spread operator console.log([‘a’, …list1]); //Or using unshift method list1.unshift(‘a’); console.log(list1); How to add elements at the end of an array in javascript? let list2 = [‘a’, ‘b’]; //using spread operator console.log([…list2, ‘c’]); //or push method list2.push(‘c’); console.log(list2);
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What is async attribute in script tag in javascript?
What is async attribute in script tag in javascript? <script src=”test.js” async></script> If async attribute is present in script tag then script is executed asynchronously. async attribute is a Boolean attribute. What is the difference between async and defer? If async is present the file gets downloaded asynchronously and then executed as soon as it’s
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