77 lines
1.8 KiB
TypeScript
77 lines
1.8 KiB
TypeScript
export class HelperFunctions {
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public static scroll() {
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HelperFunctions.scrollTo(0,0);
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}
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public static scrollTo(x,y) {
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if (typeof document !== 'undefined') {
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window.scrollTo(x,y);
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}
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}
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public static scrollToId(elementId:string) {
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if (typeof document !== 'undefined' && document.getElementById(elementId)) {
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document.getElementById(elementId).scrollIntoView();
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}
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}
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public static isTiny(url: string) {
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return (url.indexOf('tinyurl.com') !== -1);
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}
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public static copy(obj: any): any {
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let copy;
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// Handle the 3 simple types, and null or undefined
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if (null == obj || "object" != typeof obj) return obj;
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// Handle Date
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if (obj instanceof Date) {
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copy = new Date();
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copy.setTime(obj.getTime());
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return copy;
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}
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// Handle Array
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if (obj instanceof Array) {
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copy = [];
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for (let i = 0, len = obj.length; i < len; i++) {
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copy[i] = HelperFunctions.copy(obj[i]);
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}
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return copy;
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}
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// Handle Map
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if (obj instanceof Map) {
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return new Map(obj.entries());
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}
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// Handle Object
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if (obj instanceof Object) {
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copy = {};
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for (let attr in obj) {
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if (obj.hasOwnProperty(attr)) {
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copy[attr] = HelperFunctions.copy(obj[attr]);
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}
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}
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return copy;
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}
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throw new Error("Unable to copy obj! Its type isn't supported.");
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}
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public static equals(object1, object2) {
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return object1 === object2 || JSON.stringify(object1) === JSON.stringify(object2);
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}
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public static encodeArray(elements: string[]): string[] {
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let encoded: string[] = [];
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elements.forEach(element => {
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encoded.push(encodeURIComponent(element));
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});
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return encoded;
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}
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public static getValues(value: any): any[] {
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return Object.keys(value).map(key => value[key]);
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}
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}
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