Two step processing of string regular matching to get JSON list

Let's talk about why we should do this

I met a poisonous problem these days ,elementplus Of table The table does not need a key value pair json Data list to display data .

The back end of a small project I wrote is go Language , The original meaning is that the back-end gets all the data from the database , Handle it on the back end ： Package all the data into one with all json List of format data .

Then pass this list to the front end , Just assign the list directly . result go The list of languages is not like python The list of is actually there ,go The list of languages is the actual linked list , My front end can't get what I want json Data list .

So I thought of the back-end with all json The data string is passed to the front end , From the front end js Processing strings , Give me what I want json list .

Another regular expression testing tool is recommended ： Regular expression online test | Rookie tools (runoob.com)

The next step is a simple one ：

Get the back-end json data

// Get the back-end json data 
var str = response['data']

  Regular matches everything that includes braces , Returns an array

// Regular matches everything that includes braces , Returns an array 
str = str.match(/{[^}{]*?}/g)

 

eval() Definition ：eval() Function to evaluate a string , And execute the JavaScript Code .

because JSON Grammar is JavaScript A subset of grammar ,JavaScript function eval() Can be used for JSON The text is converted to JavaScript object

Now the list is still in string form json, Traversing the array converts the string to json

// But now the list is still in string form json, Traversing the array converts the string to json
for(var i=0;i<str.length;i++){

    //eval() Definition ：eval()  Function to evaluate a string , And execute the  JavaScript  Code .
    // because  JSON  Grammar is  JavaScript  A subset of grammar ,JavaScript  function  eval()  Can be used for  JSON  The text is converted to  JavaScript  object 
    str[i] = eval ("(" + str[i] + ")")


    // Console check data 
    console.log(str[i])

}