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1
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export class HelperFunctions {
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2
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3
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public static scroll() {
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4
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HelperFunctions.scrollTo(0,0);
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5
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}
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6
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public static scrollTo(x,y) {
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7
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if (typeof document !== 'undefined') {
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8
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window.scrollTo(x,y);
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9
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}
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10
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}
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11
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12
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public static scrollToId(elementId:string) {
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13
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if (typeof document !== 'undefined' && document.getElementById(elementId)) {
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14
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document.getElementById(elementId).scrollIntoView();
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15
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}
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}
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public static isTiny(url: string) {
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18
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return (url.indexOf('tinyurl.com') !== -1);
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}
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20
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public static copy(obj: any): any {
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let copy;
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23
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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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26
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27
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// Handle Date
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28
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if (obj instanceof Date) {
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29
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copy = new Date();
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30
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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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38
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copy[i] = HelperFunctions.copy(obj[i]);
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}
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40
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return copy;
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}
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43
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// Handle Map
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44
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if (obj instanceof Map) {
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45
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return new Map(obj.entries());
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46
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}
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48
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// Handle Object
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49
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if (obj instanceof Object) {
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50
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copy = {};
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51
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for (let attr in obj) {
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52
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if (obj.hasOwnProperty(attr)) {
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53
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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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57
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}
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58
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throw new Error("Unable to copy obj! Its type isn't supported.");
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59
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}
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60
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public static encodeArray(elements: string[]): string[] {
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62
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let encoded: string[] = [];
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63
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elements.forEach(element => {
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64
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encoded.push(encodeURIComponent(element));
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65
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});
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return encoded;
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67
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}
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68
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}
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