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66 lines
2.0 KiB
66 lines
2.0 KiB
3 months ago
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import test from './test.js'
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/**
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* @description 去除空格
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* @param String str 需要去除空格的字符串
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* @param String pos both(左右)|left|right|all 默认both
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*/
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function trim(str, pos = 'both') {
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str = String(str)
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if (pos == 'both') {
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return str.replace(/^\s+|\s+$/g, '')
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}
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if (pos == 'left') {
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return str.replace(/^\s*/, '')
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}
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if (pos == 'right') {
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return str.replace(/(\s*$)/g, '')
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}
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if (pos == 'all') {
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return str.replace(/\s+/g, '')
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}
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return str
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}
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/**
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* @description 样式转换
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* 对象转字符串，或者字符串转对象
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* @param {object | string} customStyle 需要转换的目标
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* @param {String} target 转换的目的，object-转为对象，string-转为字符串
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* @returns {object|string}
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*/
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function addStyle(customStyle, target = 'object') {
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// 字符串转字符串，对象转对象情形，直接返回
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if (test.empty(customStyle) || typeof(customStyle) === 'object' && target === 'object' || target === 'string' && typeof(customStyle) === 'string') {
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return customStyle
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}
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// 字符串转对象
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if (target === 'object') {
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// 去除字符串样式中的两端空格(中间的空格不能去掉，比如padding: 20px 0如果去掉了就错了)，空格是无用的
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customStyle = trim(customStyle)
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// 根据";"将字符串转为数组形式
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const styleArray = customStyle.split(';')
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const style = {}
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// 历遍数组，拼接成对象
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for (let i = 0; i < styleArray.length; i++) {
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// 'font-size:20px;color:red;'，如此最后字符串有";"的话，会导致styleArray最后一个元素为空字符串，这里需要过滤
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if (styleArray[i]) {
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const item = styleArray[i].split(':')
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style[trim(item[0])] = trim(item[1])
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}
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}
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return style
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}
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// 这里为对象转字符串形式
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let string = ''
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for (const i in customStyle) {
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// 驼峰转为中划线的形式，否则css内联样式，无法识别驼峰样式属性名
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const key = i.replace(/([A-Z])/g, '-$1').toLowerCase()
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string += `${key}:${customStyle[i]};`
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}
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// 去除两端空格
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return trim(string)
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}
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export default addStyle
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