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Use the jQuery empty() method to remove all child nodes from a parent node.ExampleYou can try to run the following code to remove all child nodes from a parent node using jQuery:Live Demo $(document).ready(function(){ $("#button1").click(function(){ $("ul").empty(); }); }); li (child) li (child) li (child) li (child) Remove Click Remove to remove all child nodes.
To append an element after an element using jQuery, use the insertAfter() method.ExampleYou can try to run the following code to learn how to append an element after an element using jQuery:Live Demo The jQuery Example $(document).ready(function() { $("div").click(function () { $("#source").insertAfter(this); }); }); .div { margin:10px; padding:12px; border:2px solid #666; width:60px; } Click on any square below to see the result:
Dequeuing elements from a PriorityQueue means removing the element of the highest priority. We are storing the elements with the highest priority at the end of the array, we can simply pop it to dequeue it.Hence, we can implement the dequeue function as follows − Exampledequeue() { // Check if empty if (this.isEmpty()) { console.log("Queue Underflow!"); return; } return this.container.pop(); }You can check if this function is working fine usinglet q = new PriorityQueue(4); q.enqueue("Hello", 3); q.enqueue("World", 2); q.enqueue("Foo", 8); console.log(q.dequeue()); q.display();OutputThis will give the output −{ data: 'Foo', priority: 8 ... Read More
To manipulate CSS pseudo elements using the hover() function. You can try to run the following code to learn how to manipulate CSS pseudo-elements −ExampleLive Demo $(document).ready(function(){ $('span').hover(function(){ $(this).addClass('change').attr('data-content','bar'); }); }); span.change:after { content: attr(data-content) ' This is demo text.'; } Place cursor below... foo
To get a style property on the matched element, use the css() method. You can try to run the following code to get a style property on the matched element using jQuery:Live Demo $(document).ready(function(){ $("#button1").click(function(){ alert($('div').css('left')); }); }); This is demo text. Get
Following program is using labeled for loops.ExampleLive Demopublic class Tester { public static void main(String args[]) { first: for (int i = 0; i < 3; i++) { for (int j = 0; j< 3; j++){ if(i == 1){ continue first; } System.out.print(" [i = " + i + ", ... Read More
Peeking a PriorityQueue means getting the value with the highest priority without removing it. So we can implement the peek function as follows &minusl Examplepeek() { if (isEmpty()) { console.log("Queue Underflow!"); return; } return this.container[this.container.length - 1]; }You can check if this function is working fine using − Examplelet q = new PriorityQueue(4); q.enqueue("Hello", 3); q.enqueue("World", 2); q.enqueue("Foo", 8); console.log(q.peek()); q.display();OutputThis will give the output −{ data: 'Foo', priority: 8 } [ { data: 'World', priority: 2 }, { data: 'Hello', priority: 3 }, { data: 'Foo', priority: 8 } ]As ... Read More
On getting the result of the following, you can find whether a variable is null or undefined. If the result is “false”, it means the variable is null and undefined.Here, the variable results in “True” − var age = 10; if(age) { document.write("True"); } else { document.write("False"); }
ajaxSend() methodThe ajaxSend(callback) method attaches a function to be executed whenever an AJAX request is sent.Here is the description of all the parameters used by this method:callback − The function to execute. The XMLHttpRequest and settings used for that request are passed as arguments to the callback.Assuming we have the following HTML content in result.html file:THIS IS RESULT...ExampleThe following is an example showing the usage of this method:Live Demo The jQuery Example $(document).ready(function() { ... Read More
We can clear the contents just by reassigning the container element to an empty array. For example, clear() { this.container = []; }ExampleYou can check if this function is working fine using − let q = new PriorityQueue(4); q.enqueue("Hello", 3); q.enqueue("World", 2); q.enqueue("Foo", 8); q.display(); q.clear(); q.display();OutputThis will give the output −[ { data: 'World', priority: 2 }, { data: 'Hello', priority: 3 }, { data: 'Foo', priority: 8 } ] [ ]