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。
热门推荐
1 训练狗狗憋尿
2 狗狗追踪训练
3 狗狗训练要多少钱
5 深圳狗狗训练
6 训练狗狗唤回
7 狗狗叫怎么训练
8 狗狗训练班
10 狗狗社会化训练
11 狗狗叫回训练
12 广州狗狗训练学校
13 狗狗训练躺下
14 狗狗随行训练
15 训练狗狗巡回
16 狗狗要怎么训练
17 狗狗喂食训练
18 训练狗狗躺下