19 lines
455 B
TypeScript
19 lines
455 B
TypeScript
export class StringUtil {
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/**
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* prefix zero fill
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* @param str target string
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* @param len fill in length
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*/
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public static zeroFill(str: any, len: number): string {
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if (typeof str === 'string') {
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let fillin = '';
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for (let i = 0; i < len - str.length; i++) {
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fillin += '0';
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}
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return fillin + str;
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} else if (typeof str === 'number') {
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return StringUtil.zeroFill(str.toString(), len);
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}
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}
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}
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