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80 lines
2.2 KiB
Plaintext
80 lines
2.2 KiB
Plaintext
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = ajaxFile;
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exports.loadFile = loadFile;
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/**
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* @file ajax获取文本数据
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* @author mengke01(kekee000@gmail.com)
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*/
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/**
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* ajax获取数据
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*
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* @param {Object} options 参数选项
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* @param {string=} options.type 类型
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* @param {string=} options.method method
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* @param {Function=} options.onSuccess 成功回调
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* @param {Function=} options.onError 失败回调
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* @param {Object=} options.params 参数集合
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*/
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function ajaxFile(options) {
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var xhr = new XMLHttpRequest();
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xhr.onreadystatechange = function () {
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if (xhr.readyState === 4) {
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var status = xhr.status;
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if (status >= 200 && status < 300 || status === 304) {
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if (options.onSuccess) {
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if (options.type === 'binary') {
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var buffer = xhr.responseBlob || xhr.response;
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options.onSuccess(buffer);
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} else if (options.type === 'xml') {
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options.onSuccess(xhr.responseXML);
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} else if (options.type === 'json') {
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options.onSuccess(JSON.parse(xhr.responseText));
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} else {
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options.onSuccess(xhr.responseText);
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}
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}
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} else if (options.onError) {
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options.onError(xhr, xhr.status);
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}
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}
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};
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var method = (options.method || 'GET').toUpperCase();
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var params = null;
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if (options.params) {
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var str = [];
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Object.keys(options.params).forEach(function (key) {
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str.push(key + '=' + encodeURIComponent(options.params[key]));
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});
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str = str.join('&');
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if (method === 'GET') {
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options.url += (options.url.indexOf('?') === -1 ? '?' : '&') + str;
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} else {
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params = str;
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}
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}
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xhr.open(method, options.url, true);
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if (options.type === 'binary') {
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xhr.responseType = 'arraybuffer';
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}
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xhr.send(params);
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}
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function loadFile(url) {
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var type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'binary';
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return new Promise(function (resolve, reject) {
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ajaxFile({
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type: type,
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url: url,
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onSuccess: function onSuccess(buffer) {
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resolve(buffer);
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},
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onError: function onError(e) {
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reject(e);
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}
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});
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});
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} |