112 lines
2.8 KiB
JavaScript
112 lines
2.8 KiB
JavaScript
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/**
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* 判断是否是JSON对象
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* @param {*} obj
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* @returns
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*/
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function isPlainObject(obj){
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if (typeof obj !== 'object' || obj === null) return false;
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var proto = Object.getPrototypeOf(obj);
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if (proto === null) return true;
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var baseProto = proto;
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while (Object.getPrototypeOf(baseProto) !== null) {
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baseProto = Object.getPrototypeOf(baseProto);
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}
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return proto === baseProto;
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}
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/**
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* 判断值是否是一个数字
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* @param {*} value
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* @returns
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*/
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function isNumber(value){
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if(value==undefined) return false
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if(typeof(value)=='number') return true
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if(typeof(value)!='string') return false
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try{
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if(value.includes(".")){
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let v = parseFloat(value)
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if(value.endsWith(".")){
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return !isNaN(v) && String(v).length===value.length-1
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}else{
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return !isNaN(v) && String(v).length===value.length
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}
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}else{
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let v = parseInt(value)
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return !isNaN(v) && String(v).length===value.length
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}
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}catch{
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return false
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}
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}
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/**
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* 简单进行对象合并
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*
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* options={
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* array:0 , // 数组合并策略，0-替换，1-合并，2-去重合并
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* }
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*
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* @param {*} toObj
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* @param {*} formObj
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* @returns 合并后的对象
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*/
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function deepMerge(toObj,formObj,options={}){
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let results = Object.assign({},toObj)
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Object.entries(formObj).forEach(([key,value])=>{
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if(key in results){
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if(typeof value === "object" && value !== null){
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if(Array.isArray(value)){
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if(options.array === 0){
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results[key] = value
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}else if(options.array === 1){
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results[key] = [...results[key],...value]
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}else if(options.array === 2){
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results[key] = [...new Set([...results[key],...value])]
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}
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}else{
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results[key] = deepMerge(results[key],value,options)
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}
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}else{
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results[key] = value
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}
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}else{
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results[key] = value
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}
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})
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return results
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}
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/**
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* 获取指定变量类型名称
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* getDataTypeName(1) == Number
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* getDataTypeName("") == String
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* getDataTypeName(null) == Null
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* getDataTypeName(undefined) == Undefined
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* getDataTypeName(new Date()) == Date
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* getDataTypeName(new Error()) == Error
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*
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* @param {*} v
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* @returns
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*/
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function getDataTypeName(v){
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if (v === null) return 'Null'
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if (v === undefined) return 'Undefined'
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if(typeof(v)==="function") return "Function"
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return v.constructor && v.constructor.name;
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};
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module.exports ={
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isPlainObject,
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isNumber,
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deepMerge,
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getDataTypeName
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} |