var MyDiv1 = document.getElementById('myid');
alert(MyDiv1.getAttribute('data-variableid2'));
Here is what the above code is Doing:
1. It’s creating a div element with an id of “myid” and a data-variableid2 attribute with a value of “myvalue”.
2. It’s then getting the div element by its id and alerting the value of the data-variableid2 attribute.
var set1 = “;,/?:@&=+$#”; // Caracteres reservados var set2 = “-_.!~*'()”; // Marcas não reservadas var set3 = “ABC abc 123”; // Caracteres alfanuméricos + Espaço console.log(encodeURI(set1)); // ;,/?:@&=+$# console.log(encodeURI(set2)); // -_.!~*'() console.log(encodeURI(set3)); // ABC%20abc%20123 (o espaço é codificado como %20) Here is what the above code is Doing: 1. The encodeURI() function encodes a…
//here is how to get an array from the length of a number // for example you want to get [1,2,3,4,5] from the integer 5. let arr = [] let i = 5 for (let j = 0 ; j < i + 1 ; j++ ) { arr.push(j) } Here is what the above...
var grid = […Array(width)].map(e => Array(height)); // access via grid[y][x] Here is what the above code is Doing: 1. We create a 2D array of size width x height. 2. We fill it with 0s. 3. We access it via grid[y][x].
var window.iAmGlobal = “some val”; //Global variable declaration with window. //Any place in other part of code function doSomething() { alert(window.iAmGlobal); //I am accessible here too !! //OR alert(iAmGlobal); //I am accessible here too !! } Here is what the above code is Doing: 1. We are declaring a global variable iAmGlobal. 2. We are…
var iterations = 1000000; console.time(‘Function #1’); for(var i = 0; i < iterations; i++ ){ functionOne(); }; console.timeEnd('Function #1') console.time('Function #2'); for(var i = 0; i < iterations; i++ ){ functionTwo(); }; console.timeEnd('Function #2') Here is what the above code is Doing: 1. We're creating two functions, functionOne and functionTwo. 2. We're creating a variable...
moment().add(30, ‘days’); Here is what the above code is Doing: 1. We’re creating a new variable called ‘now’ and setting it equal to the moment() function. 2. We’re creating a new variable called ‘later’ and setting it equal to the moment() function, but we’re adding 30 days to it. 3. We’re creating a new variable…