正则匹配ab不匹配aab
var a = "aababaabababababaab"; a.replace(/(^|[^a])(ab)+/g, "$1"); var a = "aababaabababababaab"; a.split(/aab/).map(function(value) { return value.replace(/ab/g, ""); }).join("aab");
var a = "aababaabababababaab"; a.replace(/(^|[^a])(ab)+/g, "$1"); var a = "aababaabababababaab"; a.split(/aab/).map(function(value) { return value.replace(/ab/g, ""); }).join("aab");