提交初始版本，使用vant ui库

miniprogram_npm/@vant/weapp/stepper/index.d.ts

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+export {};

miniprogram_npm/@vant/weapp/stepper/index.js

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+"use strict";
+var __assign = (this && this.__assign) || function () {
+    __assign = Object.assign || function(t) {
+        for (var s, i = 1, n = arguments.length; i < n; i++) {
+            s = arguments[i];
+            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
+                t[p] = s[p];
+        }
+        return t;
+    };
+    return __assign.apply(this, arguments);
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+var component_1 = require("../common/component");
+var validator_1 = require("../common/validator");
+var LONG_PRESS_START_TIME = 600;
+var LONG_PRESS_INTERVAL = 200;
+// add num and avoid float number
+function add(num1, num2) {
+    var cardinal = Math.pow(10, 10);
+    return Math.round((num1 + num2) * cardinal) / cardinal;
+}
+function equal(value1, value2) {
+    return String(value1) === String(value2);
+}
+(0, component_1.VantComponent)({
+    field: true,
+    classes: ['input-class', 'plus-class', 'minus-class'],
+    props: {
+        value: {
+            type: null,
+        },
+        integer: {
+            type: Boolean,
+            observer: 'check',
+        },
+        disabled: Boolean,
+        inputWidth: String,
+        buttonSize: String,
+        asyncChange: Boolean,
+        disableInput: Boolean,
+        decimalLength: {
+            type: Number,
+            value: null,
+            observer: 'check',
+        },
+        min: {
+            type: null,
+            value: 1,
+            observer: 'check',
+        },
+        max: {
+            type: null,
+            value: Number.MAX_SAFE_INTEGER,
+            observer: 'check',
+        },
+        step: {
+            type: null,
+            value: 1,
+        },
+        showPlus: {
+            type: Boolean,
+            value: true,
+        },
+        showMinus: {
+            type: Boolean,
+            value: true,
+        },
+        disablePlus: Boolean,
+        disableMinus: Boolean,
+        longPress: {
+            type: Boolean,
+            value: true,
+        },
+        theme: String,
+        alwaysEmbed: Boolean,
+    },
+    data: {
+        currentValue: '',
+    },
+    watch: {
+        value: function () {
+            this.observeValue();
+        },
+    },
+    created: function () {
+        this.setData({
+            currentValue: this.format(this.data.value),
+        });
+    },
+    methods: {
+        observeValue: function () {
+            var value = this.data.value;
+            this.setData({ currentValue: this.format(value) });
+        },
+        check: function () {
+            var val = this.format(this.data.currentValue);
+            if (!equal(val, this.data.currentValue)) {
+                this.setData({ currentValue: val });
+            }
+        },
+        isDisabled: function (type) {
+            var _a = this.data, disabled = _a.disabled, disablePlus = _a.disablePlus, disableMinus = _a.disableMinus, currentValue = _a.currentValue, max = _a.max, min = _a.min;
+            if (type === 'plus') {
+                return disabled || disablePlus || +currentValue >= +max;
+            }
+            return disabled || disableMinus || +currentValue <= +min;
+        },
+        onFocus: function (event) {
+            this.$emit('focus', event.detail);
+        },
+        onBlur: function (event) {
+            var value = this.format(event.detail.value);
+            this.setData({ currentValue: value });
+            this.emitChange(value);
+            this.$emit('blur', __assign(__assign({}, event.detail), { value: value }));
+        },
+        // filter illegal characters
+        filter: function (value) {
+            value = String(value).replace(/[^0-9.-]/g, '');
+            if (this.data.integer && value.indexOf('.') !== -1) {
+                value = value.split('.')[0];
+            }
+            return value;
+        },
+        // limit value range
+        format: function (value) {
+            value = this.filter(value);
+            // format range
+            value = value === '' ? 0 : +value;
+            value = Math.max(Math.min(this.data.max, value), this.data.min);
+            // format decimal
+            if ((0, validator_1.isDef)(this.data.decimalLength)) {
+                value = value.toFixed(this.data.decimalLength);
+            }
+            return value;
+        },
+        onInput: function (event) {
+            var _a = (event.detail || {}).value, value = _a === void 0 ? '' : _a;
+            // allow input to be empty
+            if (value === '') {
+                return;
+            }
+            var formatted = this.filter(value);
+            // limit max decimal length
+            if ((0, validator_1.isDef)(this.data.decimalLength) && formatted.indexOf('.') !== -1) {
+                var pair = formatted.split('.');
+                formatted = "".concat(pair[0], ".").concat(pair[1].slice(0, this.data.decimalLength));
+            }
+            this.emitChange(formatted);
+        },
+        emitChange: function (value) {
+            if (!this.data.asyncChange) {
+                this.setData({ currentValue: value });
+            }
+            this.$emit('change', value);
+        },
+        onChange: function () {
+            var type = this.type;
+            if (this.isDisabled(type)) {
+                this.$emit('overlimit', type);
+                return;
+            }
+            var diff = type === 'minus' ? -this.data.step : +this.data.step;
+            var value = this.format(add(+this.data.currentValue, diff));
+            this.emitChange(value);
+            this.$emit(type);
+        },
+        longPressStep: function () {
+            var _this = this;
+            this.longPressTimer = setTimeout(function () {
+                _this.onChange();
+                _this.longPressStep();
+            }, LONG_PRESS_INTERVAL);
+        },
+        onTap: function (event) {
+            var type = event.currentTarget.dataset.type;
+            this.type = type;
+            this.onChange();
+        },
+        onTouchStart: function (event) {
+            var _this = this;
+            if (!this.data.longPress) {
+                return;
+            }
+            clearTimeout(this.longPressTimer);
+            var type = event.currentTarget.dataset.type;
+            this.type = type;
+            this.isLongPress = false;
+            this.longPressTimer = setTimeout(function () {
+                _this.isLongPress = true;
+                _this.onChange();
+                _this.longPressStep();
+            }, LONG_PRESS_START_TIME);
+        },
+        onTouchEnd: function () {
+            if (!this.data.longPress) {
+                return;
+            }
+            clearTimeout(this.longPressTimer);
+        },
+    },
+});

miniprogram_npm/@vant/weapp/stepper/index.json

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+{
+  "component": true
+}

miniprogram_npm/@vant/weapp/stepper/index.wxml

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+<wxs src="../wxs/utils.wxs" module="utils" />
+<wxs src="./index.wxs" module="computed" />
+
+<view class="{{ utils.bem('stepper', [theme]) }} custom-class">
+  <view
+    wx:if="{{ showMinus }}"
+    data-type="minus"
+    style="{{ computed.buttonStyle({ buttonSize }) }}"
+    class="minus-class {{ utils.bem('stepper__minus', { disabled: disabled || disableMinus || currentValue <= min }) }}"
+    hover-class="van-stepper__minus--hover"
+    hover-stay-time="70"
+    bind:tap="onTap"
+    bind:touchstart="onTouchStart"
+    bind:touchend="onTouchEnd"
+  >
+    <slot name="minus" />
+  </view>
+  <input
+    type="{{ integer ? 'number' : 'digit' }}"
+    class="input-class {{ utils.bem('stepper__input', { disabled: disabled || disableInput }) }}"
+    style="{{ computed.inputStyle({ buttonSize, inputWidth }) }}"
+    value="{{ currentValue }}"
+    focus="{{ focus }}"
+    disabled="{{ disabled || disableInput }}"
+    always-embed="{{ alwaysEmbed }}"
+    bindinput="onInput"
+    bind:focus="onFocus"
+    bind:blur="onBlur"
+  />
+  <view
+    wx:if="{{ showPlus }}"
+    data-type="plus"
+    style="{{ computed.buttonStyle({ buttonSize }) }}"
+    class="plus-class {{ utils.bem('stepper__plus', { disabled: disabled || disablePlus || currentValue >= max }) }}"
+    hover-class="van-stepper__plus--hover"
+    hover-stay-time="70"
+    bind:tap="onTap"
+    bind:touchstart="onTouchStart"
+    bind:touchend="onTouchEnd"
+  >
+    <slot name="plus" />
+  </view>
+</view>

miniprogram_npm/@vant/weapp/stepper/index.wxs

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+/* eslint-disable */
+var style = require('../wxs/style.wxs');
+var addUnit = require('../wxs/add-unit.wxs');
+
+function buttonStyle(data) {
+  return style({
+    width: addUnit(data.buttonSize),
+    height: addUnit(data.buttonSize),
+  });
+}
+
+function inputStyle(data) {
+  return style({
+    width: addUnit(data.inputWidth),
+    height: addUnit(data.buttonSize),
+  });
+}
+
+module.exports = {
+  buttonStyle: buttonStyle,
+  inputStyle: inputStyle,
+};

miniprogram_npm/@vant/weapp/stepper/index.wxss

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+@import '../common/index.wxss';.van-stepper{font-size:0}.van-stepper__minus,.van-stepper__plus{background-color:var(--stepper-background-color,#f2f3f5);border:0;box-sizing:border-box;color:var(--stepper-button-icon-color,#323233);display:inline-block;height:var(--stepper-input-height,28px);margin:1px;padding:var(--padding-base,4px);position:relative;vertical-align:middle;width:var(--stepper-input-height,28px)}.van-stepper__minus:before,.van-stepper__plus:before{height:1px;width:9px}.van-stepper__minus:after,.van-stepper__plus:after{height:9px;width:1px}.van-stepper__minus:empty.van-stepper__minus:after,.van-stepper__minus:empty.van-stepper__minus:before,.van-stepper__minus:empty.van-stepper__plus:after,.van-stepper__minus:empty.van-stepper__plus:before,.van-stepper__plus:empty.van-stepper__minus:after,.van-stepper__plus:empty.van-stepper__minus:before,.van-stepper__plus:empty.van-stepper__plus:after,.van-stepper__plus:empty.van-stepper__plus:before{background-color:currentColor;bottom:0;content:"";left:0;margin:auto;position:absolute;right:0;top:0}.van-stepper__minus--hover,.van-stepper__plus--hover{background-color:var(--stepper-active-color,#e8e8e8)}.van-stepper__minus--disabled,.van-stepper__plus--disabled{color:var(--stepper-button-disabled-icon-color,#c8c9cc)}.van-stepper__minus--disabled,.van-stepper__minus--disabled.van-stepper__minus--hover,.van-stepper__minus--disabled.van-stepper__plus--hover,.van-stepper__plus--disabled,.van-stepper__plus--disabled.van-stepper__minus--hover,.van-stepper__plus--disabled.van-stepper__plus--hover{background-color:var(--stepper-button-disabled-color,#f7f8fa)}.van-stepper__minus{border-radius:var(--stepper-border-radius,var(--stepper-border-radius,4px)) 0 0 var(--stepper-border-radius,var(--stepper-border-radius,4px))}.van-stepper__minus:after{display:none}.van-stepper__plus{border-radius:0 var(--stepper-border-radius,var(--stepper-border-radius,4px)) var(--stepper-border-radius,var(--stepper-border-radius,4px)) 0}.van-stepper--round .van-stepper__input{background-color:initial!important}.van-stepper--round .van-stepper__minus,.van-stepper--round .van-stepper__plus{border-radius:100%}.van-stepper--round .van-stepper__minus:active,.van-stepper--round .van-stepper__plus:active{opacity:.7}.van-stepper--round .van-stepper__minus--disabled,.van-stepper--round .van-stepper__minus--disabled:active,.van-stepper--round .van-stepper__plus--disabled,.van-stepper--round .van-stepper__plus--disabled:active{opacity:.3}.van-stepper--round .van-stepper__plus{background-color:#ee0a24;color:#fff}.van-stepper--round .van-stepper__minus{background-color:#fff;border:1px solid #ee0a24;color:#ee0a24}.van-stepper__input{-webkit-appearance:none;background-color:var(--stepper-background-color,#f2f3f5);border:0;border-radius:0;border-width:1px 0;box-sizing:border-box;color:var(--stepper-input-text-color,#323233);display:inline-block;font-size:var(--stepper-input-font-size,14px);height:var(--stepper-input-height,28px);margin:1px;min-height:0;padding:1px;text-align:center;vertical-align:middle;width:var(--stepper-input-width,32px)}.van-stepper__input--disabled{background-color:var(--stepper-input-disabled-background-color,#f2f3f5);color:var(--stepper-input-disabled-text-color,#c8c9cc)}