$.ajax 中boolean变成string

发表于 
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var url = 'http://www.test.com/api/test'
var data = {name:'Xiaomi',member:true}
$.post(url, data, () => {})
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//express 服务器接收到的参数
req.body.member === 'true'// true

产生原因是,httpRequest header中 默认是 contentType = application/x-www-form-urlencoded, 如果相传boolean 应该改为 json

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$.ajax({
		type: 'POST',
		contentType: 'application/json; charset=utf-8',
		url: url,
		data: JSON.stringify(data),
		success: (res) => { }
});