function find_str_between(l, s_s, s_e){
let ls = l.split(s_s);
if(ls.length > 1){
if(s_e){
let ls2 = ls[1].split(s_e);
if(ls2.length > 1){
return ls2[0];
} else {
return '';
}
} else {
return ls[1];
}
} else {
return '';
}
}
function find_ls_between(l, s_s, s_e){
let ls_r = [];
let ls = l.split(s_s);
for(let i = 1; i < ls.length; i++){
if(s_e){
let ls2 = ls[i].split(s_e);
if(ls2.length > 1){
ls_r.push(ls2[0]);
} else {
ls_r.push('');
}
} else {
ls_r.push(ls[1]);
}
}
return ls_r;
}
console.log(find_str_between("Hello World!", 'e', 'o'));
console.log(find_ls_between("<td>1</td><td>2</td>", '<td>', '</td>'));输出：
ll [ '1', '2' ]