javascript过滤,js过滤器的用途

javascript正则过滤与提取指定的字串

var str = '(1) 192.168.1.1-1,(3) 192.168.1.2-2,(9) 192.168.1.3-1,(12) 192.168.1.4-2'

var re = /\(\d+\)/g

console.log(str.replace(re,""))

相关问答

Q1: Javascript如何过滤数组？

你这个数据格式就有问题吧。。

应该是这样的：

var arr = {

"list":

[{name:"tony","age":22},

{name:"JOE","age":22},

{name:"jod","age":23},

{name:"Kim","age":24}]

};

过滤：

var array = new Array();

for(var i = 0; i arr.list.length; i++){

if (arr.list[i].age == 22 ) array.push(arr.list[i]);

}

输出：

var str="";

for (var j = 0; j array.length; j++){

str += "name:" + array[j].name + " age:"+array[j].age+"\n";

}

alert(str);

Q2: javascript 怎样过滤非法字符

你可以用过滤器来过过滤，jsp中的filter。

public class WordFilter implements Filter {

//写自己的response

class MyResponse extends HttpServletResponseWrapper{

//放字符串的

private StringWriter sw = new StringWriter();

//1.这个构造是必须是，作用是把原来的传进来进行替换

public MyResponse(HttpServletResponse arg0) {

super(arg0);

}

//2. 重写方法

@Override

public PrintWriter getWriter() throws IOException {

return new PrintWriter(sw);

}

//3.重写toString

@Override

public String toString() {

return sw.toString();

}

}

public void destroy() {

// TODO Auto-generated method stub

}

public void doFilter(ServletRequest arg0, ServletResponse arg1,

FilterChain arg2) throws IOException, ServletException {

//替换自己的response

MyResponse response = new MyResponse((HttpServletResponse) arg1);

//让自己的response通过

arg2.doFilter(arg0, response);

//得到自己的内容

String str = response.toString();

//改一改内容

str = str.replaceAll("sb", "s*");

str = str.replaceAll("王八蛋", "？？");

//传内容

response.getResponse().getOutputStream().print(str);

System.out.println("...");

}

public void init(FilterConfig arg0) throws ServletException {

// TODO Auto-generated method stub

}

}

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