How to use 'how to get session value in javascript' in JavaScript

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121getAttribute(key: string): any {
122 return this.data[ key ];
123}
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108static getSessionData(key: string): any {
109 const sessionStorage = BrowserStorage.getSessionStorage();
110
111 if(sessionStorage) {
112 try {
113 const item = sessionStorage.getItem(key);
114
115 if(item) {
116 return item ? JSON.parse(item) : null;
117 }
118
119 return null;
120 } catch(error) {
121 return null;
122 }
123 } else {
124 return null;
125 }
126}

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