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syntax highlighting for json objects in DOM
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function syntaxHighlight(json) { | |
if (typeof json != 'string') { | |
json = JSON.stringify(json, undefined, 2); | |
} | |
json = json.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>'); | |
return json.replace(/("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g, function (match) { | |
let cls = 'number'; | |
if (/^"/.test(match)) { | |
if (/:$/.test(match)) { | |
cls = 'key'; | |
} else { | |
cls = 'string'; | |
} | |
} else if (/true|false/.test(match)) { | |
cls = 'boolean'; | |
} else if (/null/.test(match)) { | |
cls = 'null'; | |
} | |
return '<span class="' + cls + '">' + match + '</span>'; | |
}); | |
} |
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