10 examples of 'jquery check if div has class name' in JavaScript

168
function hasClass(elem, className) {
169
    return getElem(elem).className.split(' ').has(className);
170
}

93
function hasClass(el, cls) {
94
    return el.className.indexOf(cls) != -1;
95
}

8
function hasClass(elem, className) {
9
    return new RegExp(' ' + className + ' ').test(' ' + elem.className + ' ');
10
}

198
function addClassToDiv(div, className) {
199
    const arr = div.className.split(" ");
200
    if (arr.indexOf(className) === -1) {
201
        div.className += ` ${className}`;
202
    }
203
}

188
export function hasClass(elem, className) {
189
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    // Check if there is an element and
191
	// a Class Name given
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	if( !elem || !className ) return null;
193
194
	// Check if it is a list of elements
195
	if( elem.length > 1 ) {
196
197
		// Run through the list and check if
198
		// one of them has not that class Name
199
		for( var i=0, max=elem.length; i<max; i++ ) {
200
			if( !hasClass( elem[i], className ) ) {
201
				return false;
202
			}
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		}
204
205
		// Not found - return false
206
		return true;
207
208
	} else {
209
		// Check if browser supports classList
210
		// Jep: Check with classList
211
		// Nope: Do a regex
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		if( !!elem.classList ) {
213
			return elem.classList.contains( className );
214
		} else {
215
			var className = " " + className + " ";
216
			return ((" " + elem.className + " ").replace(/[\n\t]/g, " ").indexOf(className) > -1);
217
		}
218
	}
219
}

53
function addClass(element, classnm) {
54
    var i;
55
    if (element instanceof window.NodeList) {
56
        for (i = 0; i < element.length; i++) {
57
            addClass(element[i], classnm);
58
        }
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        return;
60
    }
61
    if (!isHTMLElement(element) || typeof classnm !== 'string') {
62
        return false;
63
    }
64
    var tmp = classnm.split(' ');
65
    if (tmp.length > 1) {
66
        var success = true;
67
        for (i = 0; i < tmp.length; i++) {
68
            if (!addClass(element, tmp[i])) {
69
                success = false;
70
            }
71
        }
72
        return success;
73
    }
74
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    if (hasClass(element, classnm)) {
76
        return false;
77
    }
78
    element.className = trim([element.className, classnm].join(' '));
79
    return true;
80
}

888
function hasClass(el, className) {
889
    return getClassRegEx(className).test(el.className);
890
}

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

26
function hasClass (el, name) {
27
  return new RegExp(' ' + name + ' ').test(' ' + el.className + ' ')
28
}

66
export function hasClass(element: HTMLElement, className: string): boolean {
67
  if (element.classList) {
68
    return element.classList.contains(className);
69
  } else {
70
    return (element.className.split(" ").indexOf(className) >= 0);
71
  }
72
}