How to apply multiple escape characters to the JavaScript

Question

What is the best way to apply multiple escape characters to the JavaScript below so they won't collide with each other? Currently, if I apply escape characters to " and \, it invalidates the JSON.

Sample payload:

Escape chars:

 let choVal = gotVal.replace(/"/g, '\\"');

 let evalue = choVal.replace(/\\/g, '\\\\')

Result Invalid json

JavaScript code

function replacefunc(jsonString) {

    const match = jsonString.match(/"Extra_Information_on_Label"\s*:\s*"(.*?)"(\s*,\s*"\w+":)/s);

    

    if (match) {

        let gotVal = match[1]; 

        let choVal = gotVal.replace(/"/g, '\\"');

        let evalue = choVal.replace(/\\/g, '\\\\')

        return jsonString.replace(match[0], `"Extra_Information_on_Label": "${evalue}"${match[2]}`);

    }

    throw new Error("Extra_Information_on_Label property not found in the given JSON string.");

}

let data = workflowContext.actions.Set_variable.inputs.value;

if (!data || typeof data !== "string") {

    throw new Error("Set_variable.inputs.value is undefined, incorrect, or not a JSON string.");

}

let out = replacefunc(data);

return out;

Special characters to handle in above JavaScript together

@RithwikBojja

Answer 1

Hi @Krzysztof Nowicki,

Below is the design which gives expected results:

Firstly, I had set the string variable 'var' as below:

Then used below actions:

Code:

function rithreplcefunc(instr) {

    const ri_match = instr.match(/"Extra_Information_on_Label"\s*:\s*"(.*?)"(\s*,\s*"\w+":)/s);

    if (ri_match) {

        let rigoVal = ri_match[1]; 

        let ri_eg_val = JSON.stringify(rigoVal).slice(1, -1);

        return instr.replace(ri_match[0], `"Extra_Information_on_Label": "${ri_eg_val}"${ri_match[2]}`);

    }

    throw new Error("Hello Rithwik, Extra_Information_on_Label property not found in JSON string.");

}

let ri_dta = workflowContext.actions.Set_variable.inputs.value;

if (!ri_dta || typeof ri_dta !== "string") {

    throw new Error("Set_variable.inputs.value is undefined, incorrect, or not a JSON string.");

}

let ri_res = rithreplcefunc(ri_dta);

return ri_res;

Output:

Hope this helps.

If the answer is helpful, please click Accept Answer and kindly upvote it. If you have any further questions about this answer, please click Comment.