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23 lines
434 B
JavaScript
23 lines
434 B
JavaScript
class stringNumber{
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constructor(value,printNaN=true) {
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this.string=value
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this.printNaN=printNaN
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}
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valueOf() {
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return parseFloat(this.string)
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}
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toString(){
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if (checkNumber(this.string) && this.printNaN) {
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return this.string
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} else {
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return NaN.toString()
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}
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}
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}
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function checkNumber(string) {
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try {
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return !Number.isNaN(parseFloat(string))
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} catch (error) {
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return false
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}
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} |