[js] 处理字符串换行造成的json解析失败

 

 

需求:从数据库某个字段取出字符串出来,转为json,结果发现报错为 解析失败,发现是因为取出的字符串换行导致,现在需要将字符串里面的换行替换为'',使字符串可依成功解析成json对象。

技术:依靠replace函数实现

----------------------------------------
数据库里面的
----------------------------------------

{"choiceList":{"A":"<p>

<span>spare</span>

</p>","B":"<p>

<span>fast&nbsp;</span>

</p>","C":"<p>

<span>moderate</span>

</p>","D":"<p>

<span>moral</span>

</p>"}}

----------------------------------------
去掉多余空格后的样子
----------------------------------------

{"choiceList":{"A":"<p><span>spare</span></p>","B":"<p><span>fast&nbsp;</span></p>","C":"<p><span>moderate</span></p>","D":"<p><span>moral</span></p>"}}

----------------------------------------
最后的解析成功的
----------------------------------------

{
    "choiceList": {
        "A": "<p><span>spare</span></p>", 
        "B": "<p><span>fast </span></p>", 
        "C": "<p><span>moderate</span></p>", 
        "D": "<p><span>moral</span></p>"
    }
}

 

关键代码:

var json=异常字符串
json = json.replace(/\n/g,"").replace(/\r/g,"");//去掉字符串中的换行符
json = json.replace(/\n/g,"").replace(/\s|\xA0/g,"");//去掉字符串中的所有空格
var jsonObj= eval('(' + json + ')'); //将字符串解析成json对象

console.log(jsonObj);

 

测试:

http://www.w3school.com.cn/tiy/t.asp?f=jquery_hide

<!DOCTYPE html>
<html>
<head>
<script src="/jquery/jquery-1.11.1.min.js">
</script>
<script>
  $(document).ready(function(){
       var json='{"choiceList":           {"A2":"<p>\n\n<span>                  spare</span>\n\n</p>","B":"<p>\n\n<span>fast&nbsp;</span>\n\n</p>","C":"<p>\n\n<span>              moderate</span>\n\n</p>","D":"<p>\n\n<span>moral</span>\n\n</p>"}}';
     json = json.replace(/\n/g,"").replace(/\r/g,"").replace(/\s|\xA0/g,"");
     var jsonObj= eval('(' + json + ')');
     console.log(jsonObj);
  });
</script>
</head>
<body>
<p>请在console控制台看结果</p>
</body>
</html>

 

posted @ 2018-07-12 10:38  Aviva_ye  阅读(7280)  评论(0编辑  收藏  举报