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<h1 class="page-title">Source: unique.js</h1>
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<pre class="prettyprint source linenums"><code>import typeOf from './typeOf';
import includes from './includes';
import trim from './trim';
import isArray from './isArray';
import isString from './isString';
import isNumber from './isNumber';
/**
* @description 对数组去重 只对string[]|number[]去重 不使用new Set()
*
* @param {(Array<string | number>)} arr 需要去重的数组
* @return {*} {(Array<string | number>)} 返回一个没有重复数据的数组
* @example uniqueToArray([1,2,3,3,2]) => [1,2,3]
*/
const uniqueToArray = (arr) => {
arr = arr.filter(Boolean);
let newArr = [];
let obj = {};
for (let i = 0; i < arr.length; i++) {
if (!obj[arr[i]]) {
obj[arr[i]] = true;
newArr.push(arr[i]);
}
}
return newArr;
};
/**
* @description 对多种类型或者混合数组去重
*
* @param {Array<any>} arr 需要去重的数组
* @return {*} {Array<any>} 返回一个没有重复数据的数组
* @example uniqueToSizzArray([{age:12},{age:13}]) uniqueToSizzArray(["a","b","b"])
*/
const uniqueToSizzArray = (arr) => {
arr = arr.filter(Boolean);
let newArr = [];
let newObjArr = [];
let obj = {};
for (let i = 0; i < arr.length; i++) {
let item = arr[i];
if (typeOf(item, "object")) {
if (!includes(newObjArr, item))
newObjArr.push(item);
}
else {
if (!obj[item]) {
obj[item] = true;
newArr.push(item);
}
}
}
return newArr.concat(newObjArr);
};
/**
* @description 对字符串去重
*
* @param {string} str 需要去重的字符串
* @return {*} {string} 返回新的字符串
* @example uniqueToSttring("abcbbbc") => abc
*/
const uniqueToSttring = (str) => {
str = trim(str); //先对其去空格
let newStr = "";
let obj = {};
for (let i = 0; i < str.length; i++) {
if (!obj[str[i]]) {
newStr += str[i];
obj[str[i]] = true;
}
}
return newStr;
};
/**
* @description 对数字去重
*
* @param {number} num 需要去重的数字
* @return {*} {number} 返回没有重复的数字
* @example uniqueToNumber(111123) => 123
*/
const uniqueToNumber = (num) => {
let str = "" + num; //对数字转字符串
return Number(uniqueToSttring(str));
};
/**
* @description 对一个集合去重
*
* @param {*} data 任意值
* @return {*} {*} 返回没有重复的数据
* @example unique([1,2,3,3]) => [1,2,3] unique([{age:1}, {age:2}, {age:1}]) => [{age:1}, {age:2}]
*/
const unique = (data) => {
if (isArray(data))
return uniqueToSizzArray(data);
else if (isString(data))
return uniqueToSttring(data);
else if (isNumber(data))
return uniqueToNumber(data);
return null;
};
export default unique;
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="CheckRegExp.html">CheckRegExp</a></li><li><a href="Format.html">Format</a></li></ul><h3>Global</h3><ul><li><a href="global.html#bind">bind</a></li><li><a href="global.html#debounce">debounce</a></li><li><a href="global.html#deepCopy">deepCopy</a></li><li><a href="global.html#each">each</a></li><li><a href="global.html#empty">empty</a></li><li><a href="global.html#extend">extend</a></li><li><a href="global.html#getBrowserType">getBrowserType</a></li><li><a href="global.html#getUID">getUID</a></li><li><a href="global.html#getVerifyCode">getVerifyCode</a></li><li><a href="global.html#has">has</a></li><li><a href="global.html#includes">includes</a></li><li><a href="global.html#indexOf">indexOf</a></li><li><a href="global.html#isAndroid">isAndroid</a></li><li><a href="global.html#isArray">isArray</a></li><li><a href="global.html#isBool">isBool</a></li><li><a href="global.html#isDate">isDate</a></li><li><a href="global.html#isFn">isFn</a></li><li><a href="global.html#isIOS">isIOS</a></li><li><a href="global.html#isiPad">isiPad</a></li><li><a href="global.html#isMap">isMap</a></li><li><a href="global.html#isNaN">isNaN</a></li><li><a href="global.html#isNull">isNull</a></li><li><a href="global.html#isNumber">isNumber</a></li><li><a href="global.html#isObj">isObj</a></li><li><a href="global.html#isPC">isPC</a></li><li><a href="global.html#isPrimitive">isPrimitive</a></li><li><a href="global.html#isPromise">isPromise</a></li><li><a href="global.html#isRegExp">isRegExp</a></li><li><a href="global.html#isSet">isSet</a></li><li><a href="global.html#isString">isString</a></li><li><a href="global.html#isSymbol">isSymbol</a></li><li><a href="global.html#isUndefined">isUndefined</a></li><li><a href="global.html#isWPhone">isWPhone</a></li><li><a href="global.html#ltrim">ltrim</a></li><li><a href="global.html#noop">noop</a></li><li><a href="global.html#random">random</a></li><li><a href="global.html#remove">remove</a></li><li><a href="global.html#reverse">reverse</a></li><li><a href="global.html#rtrim">rtrim</a></li><li><a href="global.html#throttle">throttle</a></li><li><a href="global.html#toFirstLower">toFirstLower</a></li><li><a href="global.html#toFirstUpper">toFirstUpper</a></li><li><a href="global.html#toKeys">toKeys</a></li><li><a href="global.html#toLowerCase">toLowerCase</a></li><li><a href="global.html#toParam">toParam</a></li><li><a href="global.html#toQuery">toQuery</a></li><li><a href="global.html#toUpperCase">toUpperCase</a></li><li><a href="global.html#toValues">toValues</a></li><li><a href="global.html#trim">trim</a></li><li><a href="global.html#typeOf">typeOf</a></li><li><a href="global.html#unique">unique</a></li><li><a href="global.html#uniqueToArray">uniqueToArray</a></li><li><a href="global.html#uniqueToNumber">uniqueToNumber</a></li><li><a href="global.html#uniqueToSizzArray">uniqueToSizzArray</a></li><li><a href="global.html#uniqueToSttring">uniqueToSttring</a></li></ul>
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