method return True which is not boolean type

This question already has an answer here:

How can I convert a string to boolean in JavaScript? 71 answers

---

Use JSON.parse() . Takes a well-formed JSON string and returns the resulting JavaScript value.

var str = data.toLowerCase();

if(JSON.parse(str)){

  // your code
}

Note:

Using JSON.parse()

JSON.parse('{}');              // {}
JSON.parse('true');            // true
JSON.parse('"foo"');           // "foo"
JSON.parse('[1, 5, "false"]'); // [1, 5, "false"]
JSON.parse('null');            // null
JSON.parse('{"1": 1, "2": 2}') //Object {1: 1, 2: 2}

链接地址: http://www.djcxy.com/p/75080.html

上一篇: 字符串到布尔值

下一篇: 方法返回True，它不是布尔类型