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Javascript Articles
Page 4 of 534
What are the types of tags involved in javascript?
Html taga) The tag is used to define a client-side script.b) The tag contains scripting statements or an external script file.JavaScript code must be keep in script tag.Let's see the use of the tag. For suppose declare the variable outside the script tag. var a = 1; var b = 2; var c = a + b; document.getElementById("tag").innerHTML = c; Output3
Read MoreHow to find the minimum value of an array in JavaScript?
We can find the minimum value of an array using Math.min() and sort()1) Math.min() Math.min() function usually takes all the elements in an array and scrutinize each and every value to get the minimum value.It's methodology is discussed in the below example. var numbers = [6, 39, 55, 1, 44]; document.getElementById("min").innerHTML = numbers; function myFunction() { numbers.sort(function(a, b){return b - a}); document.getElementById("min").innerHTML = numbers; document.write(numbers[numbers.length-1]); } After running the program the out put will be shown as in the following imageOutputOn clicking the click me button above ...
Read MoreTraversing Diagonally in a matrix in JavaScript
Problem:We are required to write a JavaScript function that takes in a square matrix (an array of arrays having the same number of rows and columns). The function should traverse diagonally through that array of array and prepare a new array of elements placed in that order it encountered while traversing.For example, if the input to the function is −const arr = [ [1, 2, 3], [4, 5, 6], [7, 8, 9] ];Then the output should be −const output = [1, 2, 4, 7, 5, 3, 6, 8, 9];Exampleconst arr = [ [1, 2, 3], ...
Read MoreCommon element with least index sum in JavaScript
ProblemWe are required to write a JavaScript function that takes in two arrays of literals, arr1 and arr2, as the first and the second argument.Our function should find out the common element in arr1 and arr2 with the least list index sum. If there is a choice tie between answers, we should output all of them with no order requirement.For example, if the input to the function is−const arr1 = ['a', 'b', 'c', 'd']; const arr2 = ['d', 'a', 'c'];Then the output should be −const output = ['a'];Output ExplanationSince 'd' and 'a' are common in both the arrays the index ...
Read MoreJavaScript One fourth element in array
ProblemJavaScript function that takes in an array of integers sorted in increasing order, arr.There is exactly one integer in the array that occurs more than one fourth times (25%) of the times, our function should return that number.For example, if the input to the function is −const arr = [3, 5, 5, 7, 7, 7, 7, 8, 9];Then the output should be −const output = 7;Exampleconst arr = [3, 5, 5, 7, 7, 7, 7, 8, 9]; const oneFourthElement = (arr = []) => { const len = arr.length / 4; const search = (left, right, target, direction = 'left') => { let index = -1 while (left
Read MoreHow exactly does <script defer=“defer”> work?\\n
The defer attribute is used to specify that the script execution occurs when the page loads. It is used only for external scripts and is a boolean attribute.ExampleThe following code shows how to use the defer attribute: The external file added will load later, since we're using defer
Read MoreWhat is nodeValue property in JavaScript HTML DOM?
The nodeValue property is used to get the node value. You need to specify the node.ExampleYou can try to run the following code to learn how to get nodeValue property. Get the node value Demo Button Text var val = document.getElementsByTagName("BUTTON")[0]; var res = val.childNodes[0].nodeValue; document.write("Node Value: "+res);
Read MoreHow -Infinity is converted to Number in JavaScript?
Use the Number() method in JavaScript to convert to Number. You can try to run the following code to learn how to convert -Infinity Number in JavaScript.Example Convert -Infinity to Number var myVal = -Infinity; document.write("Number : " + Number(myVal)); OutputConvert -Infinity to Number Number : -Infinity
Read MoreWhat will happen when [50,100] is converted to Number in JavaScript?
Use the Number() method in JavaScript to convert to Number. You can try to run the following code to learn how to convert [50, 100] to Number in JavaScript − Example Live Demo Convert [50,100] to Number var myVal = [50,100]; document.write("Number: " + Number(myVal));
Read MoreHow to use JavaScript to set cookies for homepage only?
To set cookies for a homepage, add the page to the homepage itself.ExampleYou can try to run the following code to set cookies Enter name:
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