JSON string converted to JSON object

A parse method for a JSON object

ie8+, Chrome, Safari, and Firefox browsers are all supported.

var str = ' {' name ': ' Zhang San '} '; var obj = json.parse (str);

The disadvantage is that if the string is not in the standard format (for example, the key name is not quoted), the Uncaught SyntaxError exception is thrown.

Two eval functions

eval()The function executes the incoming string as a JavaScript code. The JSON string may not be in the standard format.

But eval can execute any string passed in, which poses a security issue. At the same time, the eval and with will change the lexical scope of JS, and affect the optimization of the browser engine's word-domain scope, thus affecting the performance.

var obj = eval (' {name: ' Zhang San '} ');

Three function functions

JSON string converted to JSON object