# 判斷正則表達式是否匹配成功 <br> >[info]正則表達式調用test()方法測試，匹配成功返回值是true，不成功返回值false **在非嚴格模式下，只要滿足其一就會直接返回true** ***** >[danger]**嚴格模式是有^$規定的正則表達式** ```javescript console.log(/./.test("除了回車換行以為的任意字符"));//true console.log(/.*/.test("0個到多個"));//true console.log(/.+/.test("1個到多個"));//true console.log(/.?/.test("哈哈"));//true console.log(/[0-9]/.test("9527"));//true console.log(/[a-z]/.test("what"));//true console.log(/[A-Z]/.test("Are"));//true console.log(/[a-zA-Z]/.test("干啥子"));//false console.log(/[0-9a-zA-Z]/.test("9ebg"));//true console.log(/b|(ara)/.test("abra"));//true console.log(/[a-z]{2,3}/.test("arfsf"));//true console.log(/\d/.test("998"));//true console.log(/\d*/.test("998"));//true console.log(/\d+/.test("998"));//true console.log(/\d{0,}/.test("998"));//true console.log(/\d{2,3}/.test("998"));//true console.log(/\D/.test("eat"));//true console.log(/\s/.test(" "));//true console.log(/\S/.test("嘎嘎"));//true console.log(/\w/.test("_"));//true console.log(/\W/.test("_"));//false ```