js转发斜线不打印 [英] js forward slash not printing

问题描述

我想要一个javascript函式，用html < br /> 标签取代所有b，但它只会印出< br> 。
这里是函数：

pre $ var destination = source.replace（/ b / g，< br \\ \\ />中）;


这行不通，是不是错误？如果是这样，有人可以告诉我怎么做吗？

字符串中没有 \ 的理由。

  var destination = source.replace（/ b / g，< br />）; 
  

jsFiddle Example

编辑

摆弄这段代码

  function gettext（）{
 var input = document.getElementById（input）。value ; 
 var value = input.replace（/ b / g，< br />）; 
 var output = document.getElementById（out）。value = value; 
} 
  

查看替换行

  var value = input.replace（/ b / g，< br />）; 
  

它是一个不是正则表达式的字符串

 / b / g
  

它需要

  var value = input.replace（/ b / g，< br />）; 
  

jsFiddle您的代码示例

I want a javascript function to replace all the b's with an html <br /> tag but it's only printing <br>. Here is the function:

var destination = source.replace(/b/g,"<br \/>");

It doesn't work, is it wrong? If so, could someone please show me how to do it?

解决方案

Original

There is no reason for the \ in the string.

var destination = source.replace(/b/g,"<br/>");

jsFiddle Example

Edit

Now you gave a sample fiddle with this code

function gettext(){
    var input = document.getElementById("input").value;
    var value = input.replace("/b/g","<br/>");
    var output = document.getElementById("out").value = value;
}

Look at the replace line

var value = input.replace("/b/g","<br/>");

it is a string not a regular expression

"/b/g"

It needs to be

var value = input.replace(/b/g,"<br/>");

jsFiddle Example with your code

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