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
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数据库里面的
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{"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>"}}
----------------------------------------
去掉多余空格后的样子
----------------------------------------
{"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>"}}
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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 </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>
原文地址：https://www.cnblogs.com/avivaye/p/9298265.html
时间： 2024-10-11 22:53:03