Question

我在javascript中将此文本作为字符串：

'ConversationMessage.edit({"conversation_message_id":1901,"conversation_id":154,"resource_id":112,"message":"Great :)","sent_datetime":"2017-05-22T10:04:16.583Z","message_type":0,"display_name":"Hammad Rasheed","resource_image":"http://whuntulocal.s3.amazonaws.com/1492584389-Shot.png","messageattachment_id":null,"message_id":null,"directory_name":null,"filename":null})'

我想从中提取对象。意思是我想要提取传递给ConversationMessage.edit()的参数作为参数。

我尝试过JSON.parse()但是失败了。我试图str.split()分裂＆＃34;）＆＃34;和＆＃34;（＆＃34;字符，但由于对象中的消息属性可以包含＆＃34;而且不起作用;）＆＃34;字符串，因为它目前包含＆＃34;伟大的：）＆＃34;。

以下是提取此字符串的HTML源代码：

<span class="message-date text-navy"><i class="fa fa-pencil text-success cursor-pointer message-edit-pencil" onclick="ConversationMessage.edit({&quot;conversation_message_id&quot;:1901,&quot;conversation_id&quot;:154,&quot;resource_id&quot;:112,&quot;message&quot;:&quot;Great {{{{{{{&quot;,&quot;sent_datetime&quot;:&quot;2017-05-22T10:04:16.583Z&quot;,&quot;message_type&quot;:0,&quot;display_name&quot;:&quot;Hammad Rasheed&quot;,&quot;resource_image&quot;:&quot;http://whuntulocal.s3.amazonaws.com/1492584389-Shot.png&quot;,&quot;messageattachment_id&quot;:null,&quot;message_id&quot;:null,&quot;directory_name&quot;:null,&quot;filename&quot;:null})"></i> Monday, 22 May 2017, 15:04 </span>

Answer 1

您可以从第一个{字符开始，以}字符加一个字符开始，即字符串的子字符串

＆＃13;

var a = 'ConversationMessage.edit({"conversation_message_id":1901,"conversation_id":154,"resource_id":112,"message":"Great :)","sent_datetime":"2017-05-22T10:04:16.583Z","message_type":0,"display_name":"Hammad Rasheed","resource_image":"http://whuntulocal.s3.amazonaws.com/1492584389-Shot.png","messageattachment_id":null,"message_id":null,"directory_name":null,"filename":null})'
console.log(JSON.parse(a.substring(a.indexOf('{'), a.lastIndexOf('}') + 1)));

＆＃13;

Answer 2

我不是javascript的专家，有人可能会为您提供更好的javascript解决方案但是对于您当前的字符串，请尝试以下正则表达式，您将获得第一组的结果，

ConversationMessage\.edit\((\{.*\})\)

Regex demo

Answer 3

简单的正则表达式应该有效：

var str = 'ConversationMessage.edit({"conversation_message_id":1901,"conversation_id":154,"resource_id":112,"message":"Great :)","sent_datetime":"2017-05-22T10:04:16.583Z","message_type":0,"display_name":"Hammad Rasheed","resource_image":"http://whuntulocal.s3.amazonaws.com/1492584389-Shot.png","messageattachment_id":null,"message_id":null,"directory_name":null,"filename":null})';

var objString = /^ConversationMessage\.edit\((.*)\)$/.exec(str);

var obj = JSON.parse(objString[1]);

console.log(obj);

.as-console-wrapper { max-height: 100% !important; top: 0; }

在javascript

3 个答案: