4 examples of 'javascript set class' in JavaScript

68
function addSetProp(clazz, className) {
69
  clazz.prototype.getProp = function(key, create) {
70
    return getProp(this.propsObj, key, create);
71
  };
72
  clazz.prototype.set = function(key, val, allowExtant) {
73
    if (typeof key == 'string') {
74
      if (val === undefined) return this;
75
      var prop = this.getProp(key, true);
76
      if (prop.exists) {
77
        if (!deq(prop.val, val)) {
78
          if (!allowExtant) {
79
            l.error(
80
                  "%s(%s) overwriting %s: %s -> %s",
81
                  className,
82
                  JSON.stringify(this.findObj),
83
                  key,
84
                  JSON.stringify(prop.val),
85
                  JSON.stringify(val)
86
            );
87
          }
88
          prop.set(val);
89
          this.toSyncObj[key] = val;
90
          this.dirty = true;
91
        }
92
      } else {
93
        prop.set(val);
94
        this.toSyncObj[key] = val;
95
        this.dirty = true;
96
      }
97
    } else if (typeof key == 'object') {
98
      for (k in key) {
99
        this.set(k, key[k], !!val);
100
      }
101
    } else {
102
      l.error(
103
            "%s(%s): Invalid .set() argument: %s",
104
            className,
105
            JSON.stringify(this.findObj),
106
            JSON.stringify(key)
107
      );
108
    }
109
    return this;
110
  }
111
}

104
function setClassName(id, className) {
105
	var ele = document.getElementById(id);
106
	if (ele) {
107
		ele.className = className;
108
	}
109
}

3
function toggleClass(element: Element, klass: string, value: boolean) {
4
    const classes = new Set(element.className.split(" "));
5
    if (value) {
6
        classes.add(klass);
7
    } else {
8
        classes.delete(klass);
9
    }
10
    element.className = Array.from(classes).join(" ");
11
}

96
toggleClass (cls) {
97
    if (this.hasClass(cls)) {
98
        this.removeClass(cls);
99
    } else {
100
        this.addClass(cls);
101
    }
102
}