Escaping backslashes in Unicode with Javascript

Question

Escaping backslashes in Unicode with Javascript

Similar Question:
How do I decode a string with escaped unicode?

I have a JavaScript variable that contains a Unicode character.

var value = "\\u53d3\\u5f13\\";

When I add the above value dynamically to a div, the proper Unicode value is not displayed due to the additional backslashes (\\u). However, if I change it to a single backslash (\u), the Unicode symbol appears correctly.

In my current environment, I am unable to store the value with a single backslash as the response comes from the server side.

Is there a way to replace the double backslash with a single backslash and display the correct Unicode?

Thank you in advance.

javascript regex jsp unicode unicode-string

Answer 1

Answer №1

Forget about the backslash - now it's all about what the string actually contains. Simply replacing backslashes will result in "u53d3u5f13". However, you can easily unescape them (as long as you're okay with anything \uXXXX being replaced):

function decodeUnicode( str ) {
    return str.replace( /\\u([a-fA-F0-9]{4})/g, function(g, m1) {
         return String.fromCharCode(parseInt(m1, 16));
    });
}

var text = "\\u53d3\\u5f13\\";
decodeUnicode(text);
"叓弓\"

Answer 2

Forget about the backslash - now it's all about what the string actually contains. Simply replacing backslashes will result in "u53d3u5f13". However, you can easily unescape them (as long as you're okay with anything \uXXXX being replaced):

function decodeUnicode( str ) {
    return str.replace( /\\u([a-fA-F0-9]{4})/g, function(g, m1) {
         return String.fromCharCode(parseInt(m1, 16));
    });
}

var text = "\\u53d3\\u5f13\\";
decodeUnicode(text);
"叓弓\"

Escaping backslashes in Unicode with Javascript

Answer №1

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