如何使用 javascript 从电子邮件地址中提取用户名？
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How can I extract the user name from an email address using javascript?
提问by VvDPzZ
Given the following email address -- [email protected] -- how can I extract someone from the address using javascript?
给定以下电子邮件地址[email protected]如何使用javascript 从地址中提取某人？
Thank you.
谢谢你。
回答by epascarello
Regular Expression with match
正则表达式匹配
with safety checks
有安全检查
var str="[email protected]";
var nameMatch = str.match(/^([^@]*)@/);
var name = nameMatch ? nameMatch[1] : null;
written as one line
写成一行
var name = str.match(/^([^@]*)@/)[1];
Regular Expression with replace
带替换的正则表达式
with safety checks
有安全检查
var str="[email protected]";
var nameReplace = str.replace(/@.*$/,"");
var name = nameReplace!==str ? nameReplace : null;
written as one line
写成一行
var name = str.replace(/@.*$/,"");
Split String
拆分字符串
with safety checks
有安全检查
var str="[email protected]";
var nameParts = str.split("@");
var name = nameParts.length==2 ? nameParts[0] : null;
written as one line
写成一行
var name = str.split("@")[0];
Performance Tests of each example
每个示例的性能测试
回答by qingbo
"[email protected]".split('@')[0]
回答by Andrew D.
username:
用户名：
"[email protected]".replace(/^(.+)@(.+)$/g,'')
server:
服务器：
"[email protected]".replace(/^(.+)@(.+)$/g,'')
回答by Devdutta Natu
var email = "[email protected]";
var username = email.substring(0,email.indexOf('@'))
回答by kmcc049
string.split(separator, limit) is the method you want
string.split(separator, limit) 是你想要的方法
"[email protected]".split("@")[0]
"[email protected]".split("@")[0]
