根据正则表达式的匹配结果将匹配项替换为*function regReplace(reg, str){ var result, //最终输出结果 out, //每次运行正则exec返回的匹配结果。 index, //匹配项在字符串中位置 length; //匹配项长度 result = str.split(""); //将待匹配的字符串分开成数组,等待处理 while(out = reg.exec(str)){ //当匹配成功返回out数组,如果没有匹配项或达到字符串末尾返回null length = out[0].length; //匹配项长度 for(var i = 0; i < length; i++){ //从开始匹配的位置,根据匹配项长度循环替换为* index = reg.lastIndex; result.splice(index -length + i, 1, "*"); } } return reg + "\n"+ str + "\n" + result.join(""); //返回结果 }
测试一: var strs = ‘[email protected]‘; var regs = /[\w\-][email protected][a-zA-Z\d]((\-)?[a-zA-Z\d])*(\.[a-zA-Z\d]((\-)?[a-zA-Z\d])*)*(\.[a-zA-Z]{2,4})/g; var outCome = regReplace(regs, strs); console.log(outCome); 输出:/[\w\-][email protected][a-zA-Z\d]((\-)?[a-zA-Z\d])*(\.[a-zA-Z\d]((\-)?[a-zA-Z\d])*)*(\.[a-zA-Z]{2,4})/g
[email protected]
*****************测试二:var str = ‘a aa aaa aaaa ab abb abbba abcba‘; var reg = /ab+/g; 输出: /ab+/g a aa aaa aaaa ab abb abbba abcba a aa aaa aaaa ** *** ****a **cba
时间: 2024-10-19 20:07:09