055：vue工具 --- 人民币小写转化为大写

查看专栏目录: VUE ------ element UI

专栏目标

在vue和element UI联合技术栈的操控下，本专栏提供行之有效的源代码示例和信息点介绍，做到灵活运用。

（1）提供vue2的一些基本操作：安装、引用，模板使用，computed，watch，生命周期(beforeCreate，created,beforeMount，mounted, beforeUpdate，updated, beforeDestroy，destroyed，activated，deactivated，errorCaptured，components，)、 $root , $parent , $children , $slots , $refs , props, $emit , eventbus ,provide / inject, Vue.observable, $listeners, $attrs, $nextTick , v-for, v-if, v-else,v-else-if，v-on，v-pre，v-cloak，v-once，v-model， v-html, v-text, keep-alive，slot-scope， filters, v-bind，.stop, .native, directives，mixin，render，国际化，Vue Router等

（2）提供element UI的经典操作：安装，引用，国际化，el-row，el-col，el-button，el-link，el-radio，el-checkbox ，el-input，el-select, el-cascader, el-input-number, el-switch,el-slider, el-time-picker, el-date-picker, el-upload, el-rate, el-color-picker, el-transfer, el-form, el-table, el-tree, el-pagination,el-badge,el-avatar,el-skeleton, el-empty, el-descriptions, el-result, el-statistic, el-alert, v-loading, $message, $alert, $prompt, $confirm , $notify, el-breadcrumb, el-page-header,el-tabs ,el-dropdown,el-steps,el-dialog, el-tooltip, el-popover, el-popconfirm, el-card, el-carousel, el-collapse, el-timeline, el-divider, el-calendar, el-image, el-backtop，v-infinite-scroll， el-drawer等

应用场景

vue项目中，如何将人民币小写转化为大写呢，下面的示例就是这样的一个小工具，具体的看源代码

示例效果

示例源代码（共180行）

/*
* @Author: 大剑师兰特（xiaozhuanlan），还是大剑师兰特（CSDN）
* @此源代码版权归大剑师兰特所有，可供学习或商业项目中借鉴，未经授权，不得重复地发表到博客、论坛，问答，git等公共空间或网站中。
* @Email: 2909222303@qq.com
* @weixin: gis-dajianshi
* @First published in CSDN
* @First published time: 2023-12-18
*/

<template>
	<div class="djs-box">
		<div class="topBox">
			<h3>vue工具：人民币小写转化为大写 </h3>
			<div>大剑师兰特, 还是大剑师兰特，gis-dajianshi</div>
		</div>
		<div class="dajianshi">
			<el-input type="textarea" :rows="10" v-model="textdata" style="font-size: 18px;"></el-input>
		</div>
		<h4>
			<el-button type="success" size="small" @click="convertCurrency(textdata)">转换为人民币大写</el-button>
		</h4>
	</div>
</template>

<script>
	export default {
		data() {
			return {
				textdata: '998.55',
			}
		},
		mounted() {

		},
		methods: {
			convertCurrency(currencyDigits) {
				// Constants: 
				var MAXIMUM_NUMBER = 99999999999.99;
				// Predefine the radix characters and currency symbols for output: 
				var CN_ZERO = "零";
				var CN_ONE = "壹";
				var CN_TWO = "贰";
				var CN_THREE = "叁";
				var CN_FOUR = "肆";
				var CN_FIVE = "伍";
				var CN_SIX = "陆";
				var CN_SEVEN = "柒";
				var CN_EIGHT = "捌";
				var CN_NINE = "玖";
				var CN_TEN = "拾";
				var CN_HUNDRED = "佰";
				var CN_THOUSAND = "仟";
				var CN_TEN_THOUSAND = "万";
				var CN_HUNDRED_MILLION = "亿";
				var CN_SYMBOL = "人民币";
				var CN_DOLLAR = "元";
				var CN_TEN_CENT = "角";
				var CN_CENT = "分";
				var CN_INTEGER = "整";
				// Variables: 
				var integral; // Represent integral part of digit number. 
				var decimal; // Represent decimal part of digit number. 
				var outputCharacters; // The output result. 
				var parts;
				var digits, radices, bigRadices, decimals;
				var zeroCount;
				var i, p, d;
				var quotient, modulus;
				// Validate input string: 
				currencyDigits = currencyDigits.toString();
				if (currencyDigits == "") {
					alert("请输入小写金额！");
					return "";
				}
				if (currencyDigits.match(/[^,.\d]/) != null) {
					alert("小写金额含有无效字符！");
					return "";
				}
				if ((currencyDigits).match(/^((\d{1,3}(,\d{3})*(.((\d{3},)*\d{1,3}))?)|(\d+(.\d+)?))$/) == null) {
					alert("小写金额的格式不正确！");
					return "";
				}

				// Normalize the format of input digits: 
				currencyDigits = currencyDigits.replace(/,/g, ""); // Remove comma delimiters. 
				currencyDigits = currencyDigits.replace(/^0+/, ""); // Trim zeros at the beginning. 
				// Assert the number is not greater than the maximum number. 
				if (Number(currencyDigits) > MAXIMUM_NUMBER) {
					alert("金额过大，应小于1000亿元！");
					return "";
				}

				// Process the coversion from currency digits to characters: 
				// Separate integral and decimal parts before processing coversion: 
				parts = currencyDigits.split(".");
				if (parts.length > 1) {
					integral = parts[0];
					decimal = parts[1];
					// Cut down redundant decimal digits that are after the second. 
					decimal = decimal.substr(0, 2);
				} else {
					integral = parts[0];
					decimal = "";
				}
				// Prepare the characters corresponding to the digits: 
				digits = new Array(CN_ZERO, CN_ONE, CN_TWO, CN_THREE, CN_FOUR, CN_FIVE, CN_SIX, CN_SEVEN, CN_EIGHT,
					CN_NINE);
				radices = new Array("", CN_TEN, CN_HUNDRED, CN_THOUSAND);
				bigRadices = new Array("", CN_TEN_THOUSAND, CN_HUNDRED_MILLION);
				decimals = new Array(CN_TEN_CENT, CN_CENT);
				// Start processing: 
				outputCharacters = "";
				// Process integral part if it is larger than 0: 
				if (Number(integral) > 0) {
					zeroCount = 0;
					for (i = 0; i < integral.length; i++) {
						p = integral.length - i - 1;
						d = integral.substr(i, 1);
						quotient = p / 4;
						modulus = p % 4;
						if (d == "0") {
							zeroCount++;
						} else {
							if (zeroCount > 0) {
								outputCharacters += digits[0];
							}
							zeroCount = 0;
							outputCharacters += digits[Number(d)] + radices[modulus];
						}
						if (modulus == 0 && zeroCount < 4) {
							outputCharacters += bigRadices[quotient];
							zeroCount = 0;
						}
					}
					outputCharacters += CN_DOLLAR;
				}
				// Process decimal part if there is: 
				if (decimal != "") {
					for (i = 0; i < decimal.length; i++) {
						d = decimal.substr(i, 1);
						if (d != "0") {
							outputCharacters += digits[Number(d)] + decimals[i];
						}
					}
				}
				// Confirm and return the final output string: 
				if (outputCharacters == "") {
					outputCharacters = CN_ZERO + CN_DOLLAR;
				}
				if (decimal == "") {
					outputCharacters += CN_INTEGER;
				}
				outputCharacters = outputCharacters;
				this.textdata=outputCharacters;
			}
		}

	}
</script>
<style scoped>
	.djs-box {
		width: 900px;
		height: 580px;
		margin: 50px auto;
		border: 1px solid seagreen;
	}

	.topBox {
		margin: 0 auto 0px;
		padding: 10px 0 20px;
		background: #666;
		color: #fff;
	}

	.dajianshi {
		width: 90%;
		height: 300px;
		margin: 50px auto 0;
	}
</style>