10 examples of 'jquery search for class' in JavaScript

17
return (function getElementsByClass(searchClass,node) {
18
      if (node == null) {
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          node = document;
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      }
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      var classElements = [],
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          els = node.getElementsByTagName("*"),
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          elsLen = els.length,
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          pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)"), i, j;
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      for (i = 0, j = 0; i < elsLen; i++) {
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          if (pattern.test(els[i].className)) {
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              classElements[j] = els[i];
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              j++;
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          }
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      }
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      return classElements;
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})(classname, node);

45
function JQueryClosestByClass(element, clazz) {
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  while (element) {
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    if (JQueryHasClass(element, clazz)) {
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      return element;
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    }
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    element = element.parentNode;
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  }
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  return null;
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}

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

82
find (css) {
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  return this._div.querySelector(css)
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}

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

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

188
export function hasClass(elem, className) {
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    // Check if there is an element and
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	// a Class Name given
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	if( !elem || !className ) return null;
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	// Check if it is a list of elements
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	if( elem.length > 1 ) {
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		// Run through the list and check if
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		// one of them has not that class Name
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		for( var i=0, max=elem.length; i<max; i++ ) {
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			if( !hasClass( elem[i], className ) ) {
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				return false;
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			}
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		}
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		// Not found - return false
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		return true;
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	} else {
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		// Check if browser supports classList
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		// Jep: Check with classList
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		// Nope: Do a regex
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		if( !!elem.classList ) {
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			return elem.classList.contains( className );
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		} else {
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			var className = " " + className + " ";
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			return ((" " + elem.className + " ").replace(/[\n\t]/g, " ").indexOf(className) > -1);
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		}
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	}
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}

35
function hasClass(elem, cls) {
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    return elem.classList.contains(cls)
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}

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

9
function hasClass(elem, value) {
10
  var className = spaced(elem.className || "");
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  return className.indexOf( " " + value + " " ) >= 0;
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}