Michael B. White > Quotes

“function imgLoad(url) { return new Promise(function(resolve, reject) { var request = new XMLHttpRequest(); request.open('GET', url); request.responseType = 'blob'; request.onload = function() { if (request.status === 200) { resolve(request.response); } else { reject(Error('Image didn\'t load successfully; error code:' + request.statusText)); } }; request.onerror = function() { reject(Error('There was a network error.')); }; request.send(); }); }”
― Michael B. White, Mastering JavaScript: A Complete Programming Guide Including jQuery, AJAX, Web Design, Scripting and Mobile Application Development

“var -  used to declare variables with the option of initializing the variable to a value let – used for declaring local values with a block scope and the option of initializing the variable to a value const – used to declare read-only named constants with block scope.”
― Michael B. White, Mastering JavaScript: A Complete Programming Guide Including jQuery, AJAX, Web Design, Scripting and Mobile Application Development

“// Arrays var trees = ['elm', 'ash', 'cedar', 'poplar', 'maple']; 0 in trees; // will return true 3 in trees; // will return true 6 in trees; // will return false 'ash' in trees;    // will return false (the index number must be specified,”
― Michael B. White, Mastering JavaScript: A Complete Programming Guide Including jQuery, AJAX, Web Design, Scripting and Mobile Application Development

“function showHeroes(jsonObj) { var heroes = jsonObj['members']; for (var i = 0; i < heroes.length; i++) { var myArticle = document.createElement('article'); var myH2 = document.createElement('h2'); var myPara1 = document.createElement('p'); var myPara2 = document.createElement('p'); var myPara3 = document.createElement('p'); var myList = document.createElement('ul'); myH2.textContent = heroes[i].name; myPara1.textContent = 'Secret identity: ' + heroes[i].secretIdentity; myPara2.textContent = 'Age: ' + heroes[i].age; myPara3.textContent = 'Superpowers:'; var superPowers = heroes[i].powers; for (var j = 0; j < superPowers.length; j++) { var listItem = document.createElement('li'); listItem.textContent = superPowers[j]; myList.appendChild(listItem); } myArticle.appendChild(myH2); myArticle.appendChild(myPara1); myArticle.appendChild(myPara2); myArticle.appendChild(myPara3); myArticle.appendChild(myList); section.appendChild(myArticle); } }”
― Michael B. White, Mastering JavaScript: A Complete Programming Guide Including jQuery, AJAX, Web Design, Scripting and Mobile Application Development

“abstract boolean break byte case catch char class const continue debugger default do else enum export extends false final finally float for function goto if implements import in instanceof int interface let long native new null package private protected public return short super switch synchronized this throws transient true try typeof var void volatile while with Comments”
― Michael B. White, Mastering JavaScript: A Complete Programming Guide Including jQuery, AJAX, Web Design, Scripting and Mobile Application Development