js regular related use case sharing
这次给大家带来js正则相关使用案例分享,js正则相关使用的注意事项有哪些,下面就是实战案例,一起来看一下。
JS正则表达式一条龙讲解(从原理和语法到JS正则)
JS正则表达式大全(整理详细且实用)
vaScript动态正则表达式问题
请问正则表达式可以动态生成吗?
例如JavaScript中:
var str = "strTemp";
要生成:
var re = /strTemp/;
如果是字符连接:
var re = "/" + str + "/"即可
用js实现过滤script的正则
function stripscript(s) {
return s.replace(/.*?<\/script>/ig, '');
}
/之间的内容/ 是js正则语句的书写开始与结束
.*?是贪婪的匹配,如果不是贪婪的就是.*匹配任何字符,但用贪婪的就是不包含>的内容
/ig 是不区分大小写和全局替换
JS正则表达式的验证
//说明:除“XXX XX,XXX XX,XXX.00”格式外 //为上面提供各个JS验证方法提供.trim()属性 String.prototype.trim=function(){ return this.replace(/(^\s*)|(\s*$)/g, "");
javascript 手机号码正则表达式验证函数
function checkMobile(){ var sMobile = document.mobileform.mobile.value if(!(/^1[3|4|5|8][0-9]\d{4,8}$/.test(sMobile))){ alert("不是完整的11位手机号或者正确的手机号前七位"); document.mobileform.mobile.focus(); return false; } }
正则表达式创建方式的区别及编写简单的正则方式
在字面量方式中,我们//之间包起来的所有的内容都是元字符,有的具有特殊意义,大部分都是代表本身含义的普通的元字符
var name = 'wo'; var reg = /^\d+"+name+"\d+$/
为了解决上述想在正则里面加上一个变量这样的需求,我们只能使用实例创建的方式了
var reg = new RegExp("^\\d+"+name+"\\d+$","g")
js正则表达式实现数字每隔四位用空格分隔代码
<!doctype html> <html> <head> <meta charset="utf-8"> <title></title> <script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script> <script> $(document).ready(function () { $('#ant').on('keyup mouseout input', function () { var $this = $(this); var v = $this.val(); /\S{5}/.test(v) && $this.val(v.replace(/\s/g, '').replace(/(.{4})/g, "$1 ")); }); }) </script> </head> <body> <input type="text" id="ant" /> </body> </html>
javascript 正则表达式用法 小结
function checkreg(myreg,mytext) { if(myreg.test(mytext) { alert("ok"); return true; } else { return false; } }
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