formate-value.js
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export function formatValueByGapRule(gapRule, value, gap = ' ', range, isAdd = 1) {
const arr = value ? value.split('') : [];
let showValue = '';
const rule = [];
gapRule.split('|').some((n, j) => {
rule[j] = +n + (rule[j - 1] ? +rule[j - 1] : 0);
});
let j = 0;
arr.some((n, i) => {
// Remove the excess part
if (i > rule[rule.length - 1] - 1) {
return;
}
if (i > 0 && i === rule[j]) {
showValue = showValue + gap + n;
j++;
} else {
showValue = showValue + '' + n;
}
});
let adapt = 0;
rule.some((n, j) => {
if (range === +n + 1 + j) {
adapt = 1 * isAdd;
}
});
range = typeof range !== 'undefined' ? (range === 0 ? 0 : range + adapt) : showValue.length;
return { value: showValue, range: range };
}
export function formatValueByGapStep(step, value, gap = ' ', direction = 'right', range, isAdd = 1, oldValue = '') {
if (value.length === 0) {
return { value, range };
}
const arr = value && value.split('');
let _range = range;
let showValue = '';
if (direction === 'right') {
for (let j = arr.length - 1, k = 0; j >= 0; j--, k++) {
const m = arr[j];
showValue = k > 0 && k % step === 0 ? m + gap + showValue : m + '' + showValue;
}
if (isAdd === 1) {
// 在添加的情况下，如果添加前字符串的长度减去新的字符串的长度为2，说明多了一个间隔符，需要调整range
if (oldValue.length - showValue.length === -2) {
_range = range + 1;
}
} else {
// 在删除情况下，如果删除前字符串的长度减去新的字符串的长度为2，说明少了一个间隔符，需要调整range
if (oldValue.length - showValue.length === 2) {
_range = range - 1;
}
// 删除到最开始，range 保持 0
if (_range <= 0) {
_range = 0;
}
}
} else {
arr.some((n, i) => {
showValue = i > 0 && i % step === 0 ? showValue + gap + n : showValue + '' + n;
});
const adapt = range % (step + 1) === 0 ? 1 * isAdd : 0;
_range = typeof range !== 'undefined' ? (range === 0 ? 0 : range + adapt) : showValue.length;
}
return { value: showValue, range: _range };
}
export function trimValue(value, gap = ' ') {
value = typeof value === 'undefined' ? '' : value;
const reg = new RegExp(gap, 'g');
value = value.toString().replace(reg, '');
return value;
}