:rules="[
{ required: true, trigger: 'blur', validator: this.checkCanonical },
]"
checkCanonical (rule, value, callback) {
if (value) {
let isReg = true
try {
isReg = eval(value) instanceof RegExp
} catch (e) {
isReg = false
}
isReg ? callback() : callback(new Error('请输入正确的正则表达式'))
} else {
callback(new Error('请输入正则表达式'))
}
},
标签：checkCanonical,正则表达式,是不是,value,callback,isReg,字符串,new From： https://www.cnblogs.com/hwy6/p/17298470.html