jsvascript判断数据类型
- 代码:
function getType(val){ this.val = val this.isInt = function(val){ if((typeof(val)=='number')||(val instanceof Number)){ if(/^\d*$/.test(val)){ return true }else{ return false } }else{ return false } } this.isFloat = function(val){ if((typeof(val)=='number')||(val instanceof Number)){ if(/^\d*\.\d*$/.test(val)){ return true }else{ return false } }else{ return false } } this.isString = function(val){ if((typeof(val)=='string')||(val instanceof String)){ return true }else{ return false } } this.isBoolean = function(val){ if((typeof(val)=='boolean')||(val instanceof Boolean)){ return true }else{ return false } } this.isArray = function(val){ if(val instanceof Array){ return true }else{ return false } } this.isObject = function(val){ if(val instanceof Object && typeof val.length == 'undefined'){ return true }else{ return false } } this.dump = function(){ var val = this.val var isint = this.isInt(val) var isfloat = this.isFloat(val) var isstring = this.isString(val) var isbool = this.isBoolean(val) var isarray = this.isArray(val) var isobject = this.isObject(val) if(isint){ return 'int' }else if(isfloat){ return 'float' }else if(isstring){ return 'string' }else if(isbool){ return 'boolean' }else if(isarray){ return 'array' }else if(isobject){ return 'object' } } } var a = new getType(1) var aa = a.dump() var b = new getType(1.1) var bb = b.dump() var c = new getType('hello') var cc = c.dump() var d = new getType(true) var dd = d.dump() var e = new getType([1,2]) var ee = e.dump() var f = new getType({name:'lee'}) var ff = f.dump() console.log(aa) console.log(bb) console.log(cc) console.log(dd) console.log(ee) console.log(ff)
- 输出:
int float string boolean array object
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