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Articles tagged with #javascript
There are many events that we can use to mutate the DOM based on the event. Some examples are: Mouse: click double click Keyboard keypress keydown keyup For a full list, look at https://developer.mozilla.org/en-US/docs/Web/API/Element ...
There are multiple ways to use javascript to access specific nodes in the DOM. document.getElementById() This method is very specific as IDs are supposed to be unique. It will return only 1 node. the argument should be placed around ' ' or " " ...
To locate elements in an array, we can use 2 different JavaScript methods: Array.prototype.indexOf() It is called on an array and takes 2 arguments. The value you are looking for and an optional start position compares each element using a strict...
Array.push() and Array.unshift() These take one or more arguments, the element(s) you want to add They RETURN the length of the modified array PUSH adds elements to the END of an array UNSHIFT adds them to the beginning of the array const name...
Using +: To concatenate multiple strings, you can use the + to add the strings such as below: const st = "Hi, My name is " + "Romil" //this will show the value as "Hi, My name is Romil" Using String Interpolation: This lets us dynamically insert the...
Declaring Variables: Let vs Cost Let: The main advantage of using let is that you can't redeclare the same variable a second time. This is helpful when writing lengthy code. While we can't redeclare the variable, re can REASSIGN the variable's value....