JavaScript RegExp ^ 量词
- Nyuma zaidi $
- Pya zaidi ?=
- Rejea kwa ukweli Kitabu cha Mafunzo ya JavaScript RegExp
mifano
mada 1
kufaa kusomoa "Is" kwa kina kipya kwa mtaani:
let text = "Is this his"; let pattern = /^Is/g;
mada 2
kufaa kusomoa "is" kwa mtaani, kusababisha kwa kina kipya kwa kila maelezo:
let text = `Is this kila hizi is` let pattern = /^is/gmi;
kiwemoja
new RegExp("^n")
或者简写:
/^n/
kiwemoja cha kipende
new RegExp("^n"g")
或者简写:
/\^n/g
浏览器支持
/^n/
是 ECMAScript1 (ES1) 特性。
所有浏览器都完全支持 ES1 (JavaScript 1997):
Chrome | IE | Edge | Firefox | Safari | Opera |
---|---|---|---|---|---|
Msaada | Msaada | Msaada | Msaada | Msaada | Msaada |
- Nyuma zaidi $
- Pya zaidi ?=
- Rejea kwa ukweli Kitabu cha Mafunzo ya JavaScript RegExp