diantou/public/resource/share/js/formdata.js

/**
 * Emulate FormData for some browsers
 * MIT License
 * (c) 2010 François de Metz
 */
;(function (w) {
	if (w.FakeFormData) return
	function FormData() {
		this.fake = true
		this.boundary = '--------FormData' + Math.random()
		this._fields = []
	}
	FormData.prototype.append = function (key, value) {
		this._fields.push([key, value])
	}
	FormData.prototype.toString = function () {
		var boundary = this.boundary
		var body = ''
		this._fields.forEach(function (field) {
			body += '--' + boundary + '\r\n'
			// file upload
			if (field[1] && field[1].name) {
				var file = field[1]
				body +=
					'Content-Disposition: form-data; name="' +
					field[0] +
					'"; filename="' +
					file.name +
					'"\r\n'
				body += 'Content-Type: ' + file.type + '\r\n\r\n'
				body += file.getAsBinary() + '\r\n'
			} else {
				body +=
					'Content-Disposition: form-data; name="' + field[0] + '";\r\n\r\n'
				if (field !== 0 && !!field[1]) body += field[1]
				body += '\r\n'
			}
		})
		body += '--' + boundary + '--'
		return body
	}
	w.FakeFormData = FormData
})(window)