阅读:5960 输入:2018-04-27
//方法一
function removeJsComments(code) {
return code.replace(/(?:^|\n|\r)\s*\/\*[\s\S]*?\*\/\s*(?:\r|\n|$)/g, '\n').replace(/(?:^|\n|\r)\s*\/\/.*(?:\r|\n|$)/g, '\n');
}
//方法二
function removeComments(str) {
var uid = '_' + +new Date(),
primatives = [],
primIndex = 0;
return (
str
/* Remove strings */
.replace(/(['"])(\\\1|.)+?\1/g, function(match){
primatives[primIndex] = match;
return (uid + '') + primIndex++;
})
/* Remove Regexes */
.replace(/([^\/])(\/(?!\*|\/)(\\\/|.)+?\/[gim]{0,3})/g, function(match, $1, $2){
primatives[primIndex] = $2;
return $1 + (uid + '') + primIndex++;
})
/*
- Remove single-line comments that contain would-be multi-line delimiters
E.g. // Comment /* <--
- Remove multi-line comments that contain would be single-line delimiters
E.g. /* // <--
*/
.replace(/\/\/.*?\/?\*.+?(?=\n|\r|$)|\/\*[\s\S]*?\/\/[\s\S]*?\*\//g, '')
/*
Remove single and multi-line comments,
no consideration of inner-contents
*/
.replace(/\/\/.+?(?=\n|\r|$)|\/\*[\s\S]+?\*\//g, '')
/*
Remove multi-line comments that have a replaced ending (string/regex)
Greedy, so no inner strings/regexes will stop it.
*/
.replace(RegExp('\\/\\*[\\s\\S]+' + uid + '\\d+', 'g'), '')
/* Bring back strings & regexes */
.replace(RegExp(uid + '(\\d+)', 'g'), function(match, n){
return primatives[n];
})
);
}