[JavaScript]常用的正则表达式

var tool = {//是否是正整数isPositiveInteger: function (v) {if(/^[1-9][0-9]*$/.test(v) !== true) {return false;}return true;},//是否是自然数isNaturalNumber: function (v) {if(/^(0|[1-9][0-9]*)$/.test(v) !== true) {return false;}return true;},//是否合法http链接isLegalHttpUrl: function (v) {if(/^(http|https):\/\/[\S]+$/.test(v) !== true) {return false;}return true;},//是否百分数isPercentage: function (v) {if(/^[1-9][0-9]*%$|^[0-9]*\.[\d]{1,2}%$/.test(v) !== true) {return false;}return true;}};