10 examples of 'jquery get all elements with class' in JavaScript

134
function getElements(className) {
135
 var elements = [];
136
 var el = document.getElementsByTagName('DIV');  
137
 var regexp=new RegExp("\\b"+className+"\\b");
138
 for (var i = 0; i < el.length; i++) 
139
 {
140
  if (regexp.test(el[i].className)) 
141
   elements.push(el[i]);
142
 }
143
 return elements;
144
}

31
function hasClass(element, clazz) {
32
    return (` ${element.className} `).indexOf(` ${clazz} `) > -1;
33
}

16
function getElementsByClassName(className) {
17
    if (document.getElementsByClassName) {
18
        return document.getElementsByClassName(className);
19
    } else {  // IE8
20
        return document.querySelectorAll('.' + className);
21
    }
22
}

44
function bySelectorAll(selector) {
45
    return document.querySelectorAll(selector);
46
}

20
export function getElements(selector) {
21
    return [].slice.call(document.querySelectorAll(selector));
22
}

5
function $$(classname) {
6
    var nodeList = document.getElementsByClassName(classname);
7
    var elts = [];
8
    for (var i = 0; i < nodeList.length; i++)
9
        elts.push(nodeList[i]);
10
    return elts;
11
}

12
export function queryElementsByClass(
13
  selectors: string,
14
  parentNode = document
15
): any {
16
  return parentNode.getElementsByClassName(selectors);
17
}

14
export async function getCssClasses(elementFinder: ElementFinder): Promise {
15
  const classAttr: string = await elementFinder.getAttribute('class');
16
  return classAttr.split(/\s+/);
17
}

27
export function removeClass(elem, needle) {
28
	needle = needle.trim();
29
	if (elem.classList) {
30
		elem.classList.remove(...needle.split(' '));
31
	} else {
32
		let elemClass = elem.className.trim();
33
		let className = norm(elemClass);
34
		needle = SPACE + needle + SPACE;
35
		while (className.indexOf(needle) >= 0) {
36
			className = className.replace(needle, SPACE);
37
		}
38
		elem.className = className.trim();
39
	}
40
}

78
findAll (css) {
79
  return Array.prototype.slice.call(this._div.querySelectorAll(css))
80
}