happyhappyhappy123456789happy
happy12tgdfg789happyhappyhappy
happyhappy1sdf56789happyhappy
匹配这几种情况，删除中间的字符串
前后happy数之后不为4的不匹配
2 个解决方案
#1
或者简单点，如何用正则表达式匹配两段字符串长度之和为大于（或小于）某个固定值
#2
function check(str,matchstr,time){
var reg=new RegExp(`^(?:.*?${matchstr}.*?){${time}}$`);
return reg.test(str);
}
var arr=[
'happyhappyhappy123456789happy',
'happy12tgdfg789happyhappyhappy',
'happyhappy1sdf56789happyhappy'
]
console.log(arr.map(function(item){
return check(item,'happy',3);
}));
console.log(arr.map(function(item){
return check(item,'happy',4);
}));
console.log(arr.map(function(item){
return check(item,'happy',5);
}));
大于等于
#1
或者简单点，如何用正则表达式匹配两段字符串长度之和为大于（或小于）某个固定值
#2
function check(str,matchstr,time){
var reg=new RegExp(`^(?:.*?${matchstr}.*?){${time}}$`);
return reg.test(str);
}
var arr=[
'happyhappyhappy123456789happy',
'happy12tgdfg789happyhappyhappy',
'happyhappy1sdf56789happyhappy'
]
console.log(arr.map(function(item){
return check(item,'happy',3);
}));
console.log(arr.map(function(item){
return check(item,'happy',4);
}));
console.log(arr.map(function(item){
return check(item,'happy',5);
}));
大于等于