JavaScript检查子字符串是否在字符串中的方法
本文实例讲述了JavaScript检查子字符串是否在字符串中的方法。分享给大家供大家参考,具体如下:
varstrnew="HelloRaghuHowareu" //Checkingexistenceinentirestring if(strnew.indexOf("Raghu")!=-1) { alert("Exists"); } /* Checkingexistenceattheendofstring Forexample,variableresult1inthefollowingexampleisassigned thevalueoftruebecausetheword"Ishmael"appearsattheendof thestring.Variableresult2isassignedavalueoffalsebecause "Raghu"doesn'tappearattheendofthestring. */ result1=/Raghu$/.test("CallmeRaghu"); result2=/Raghu$/.test("CallmeRaghu.Someyearsago"); /* Checkingexistenceinthebeginingofstring Inthefollowingexample,variableresult1isassignedthevalue oftruebecausetheword"Birds"appearsatthebeginningofthe string.Variableresult2isassignedthevalueoffalsebecause "Birds"doesn'tappearatthebeginningofthestring. */ result1=/^Birds/.test("Birdsfly"); result2=/^Birds/.test("BigBirdsfly");
更多关于JavaScript相关内容感兴趣的读者可查看本站专题:《JavaScript查找算法技巧总结》及《JavaScript数据结构与算法技巧总结》
希望本文所述对大家JavaScript程序设计有所帮助。