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<script>
var s = '(12P33)P(P23&P)';
var r1 = /\(.*?\)/g, r2 = /#\$(\d+)\$#/g, i = 0, a = [];
s = s.replace(r1, function($){
a.push($);
return '#$'+ (i++) +'$#';
})
s = s.replace(/p/ig, '你要替换的');
s = s.replace(r2, function($, $1){
return a[$1];
});
alert( s )
</script>
先把括号内的“隐藏”了,再来替换括号外的p,最后把隐藏的再显示出来
var s = '(12P33)#$0$#P(P23&P)';
var r1 = /\(.*?\)/g, r2 = /\((\d+)\)/g, i = 0, a = [];
s = s.replace(r1, function($){
a.push($);
return '('+ (i++) +')';
});
s = s.replace(/p/ig, '你要替换的');
s = s.replace(r2, function($, $1){
return a[$1];
});
alert( s )
<script>
var s = '(12P33)P(P23&P)';
var r1 = /(\(.*?\))*P(\(.*?\))*/g
s = s.replace(r1, "Q")
alert( s )
</script>