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allow simple arithmetic in slider input field #174

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allow simple arithmetic in slider input field #174

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16 changes: 15 additions & 1 deletion lib/components/base/Slider.vue
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Original file line number Diff line number Diff line change
Expand Up @@ -108,8 +108,22 @@ const onInputWithSnap = (value: string) => {
inputValueValid(parsedValue)
}

const parseExpression = (value: string) => {
let tokens = value.match(/^\s*(\d+)\s*(\+|-|\*|\/)\s*(\d+)\s*$/)
if (tokens !== null) {
let [, a, op, b] = tokens

if (op === '+') return parseInt(a) + parseInt(b)
if (op === '-') return parseInt(a) - parseInt(b)
if (op === '*') return parseInt(a) * parseInt(b)
if (op === '/') return parseInt(a) / parseInt(b)
}

return parseInt(value)
}

const onInput = (value: string) => {
inputValueValid(parseInt(value))
inputValueValid(parseExpression(value))
}
</script>

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