```javascript // Setup var testString = "Ada Lovelace and Charles Babbage designed the first computer and the software that would have run on it."; // 舉例 var expressionToGetSoftware = /software/gi; var softwareCount = testString.match(expressionToGetSoftware).length; // Only change code below th...
http://www.o2fo.com/chun5060/chun5060-ia3s24c1.html```javascript // Setup var testString = "There are 3 cats but 4 dogs."; // Only change code below this line. var expression = /\d+/g;// Change this line // Only change code above this line // This code counts the matches of expression in testString var digitCount = testString.match(expression).lengt...
http://www.o2fo.com/chun5060/chun5060-gix324c2.html```javascript // Setup var testString = "How many spaces are there in this sentence?"; // Only change code below this line. var expression = /\s+/g;// Change this line // Only change code above this line // This code counts the matches of expression in testString var spaceCount = testString.match(ex...
http://www.o2fo.com/chun5060/chun5060-9arg24c3.html```javascript // Setup var testString = "How many non-space characters are there in this sentence?"; // Only change code below this line. var expression = /\S/g;// Change this line // Only change code above this line // This code counts the matches of expression in testString var nonSpaceCount = tes...
http://www.o2fo.com/chun5060/chun5060-7jtl24c4.html在Javascript中， var a = new A();它做了如下幾件事， 創(chuàng)建一個空的對象object 把object綁定到函數(shù)A的上下文中（即A中的this現(xiàn)在指向object） 執(zhí)行函數(shù)A 返回object 所以，var a1 = new A()與var a2 = A()這兩句有著本質(zhì)的區(qū)別！
http://www.o2fo.com/kesyi/kesyi-wyx524r9.htmlJavaScript 支持情況 運(yùn)行限制 基于安全考慮，小程序中不支持動態(tài)執(zhí)行 JS 代碼，即： 不支持使用 eval 執(zhí)行 JS 代碼 不支持使用 new Function 創(chuàng)建函數(shù) 客戶端 ES6 API 支持情況 微信小程序已經(jīng)支持了絕大部分的 ES6 API，已支持的 API 如...
http://www.o2fo.com/weixinapp/weixinapp-cad838s3.htmlJavaScript 頁面類 * [I. 代碼實現(xiàn)](/secguide/secguide-yj8r3fky.html) + [1.1 原生DOM API的安全操作](/secguide/secguide-1wo53fkz.html) + [1.2 流行框架/庫的安全操作](/secguide/secguide-cm6t3fl0.html) + [1.3 頁面重定向](/secguide/secguide-nzas3fl5.html) + [1.4 JSON...
http://www.o2fo.com/secguide/secguide-owmy3fkx.html...`link.href`、`area.href`、`input.formaction`、`button.formaction`； ```javascript // bad: 跳轉(zhuǎn)至外部可控的不可信地址 const sTargetUrl = getURLParam("target"); location.replace(sTargetUrl); // good: 白名單限定重定向地址 function validURL(sUrl) { return !!((/^(https?:\/\/)?[...
http://www.o2fo.com/secguide/secguide-nzas3fl5.html...llow](https://github.com/douglascrockford/JSON-js/blob/master/json2.js) ```javascript // bad: 直接調(diào)用eval解析json const sUserInput = getURLParam("json_val"); const jsonstr1 = `{"name":"a","company":"b","value":"${sUserInput}"}`; const json1 = eval(`(${jsonstr1})`); // good: 使用JSON.parse...
http://www.o2fo.com/secguide/secguide-iulh3fl6.html...。 - 校驗來源時，應(yīng)使用`===`判斷，禁止使用`indexOf()` ```javascript // bad: 使用indexOf校驗Origin值 window.addEventListener("message", (e) => { if (~e.origin.indexOf("https://a.qq.com")) { // ... } else { // ... } }); // good: 使用postMessage時，限定Origin，且使用=...
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```javascript // Setup var testString = "Ada Lovelace and Charles Babbage designed the first computer and the software that would have run on it."; // 舉例 var expressionToGetSoftware = /software/gi; var softwareCount = testString.match(expressionToGetSoftware).length; // Only change code below th...
http://www.o2fo.com/chun5060/chun5060-ia3s24c1.html```javascript // Setup var testString = "There are 3 cats but 4 dogs."; // Only change code below this line. var expression = /\d+/g;// Change this line // Only change code above this line // This code counts the matches of expression in testString var digitCount = testString.match(expression).lengt...
http://www.o2fo.com/chun5060/chun5060-gix324c2.html```javascript // Setup var testString = "How many spaces are there in this sentence?"; // Only change code below this line. var expression = /\s+/g;// Change this line // Only change code above this line // This code counts the matches of expression in testString var spaceCount = testString.match(ex...
http://www.o2fo.com/chun5060/chun5060-9arg24c3.html```javascript // Setup var testString = "How many non-space characters are there in this sentence?"; // Only change code below this line. var expression = /\S/g;// Change this line // Only change code above this line // This code counts the matches of expression in testString var nonSpaceCount = tes...
http://www.o2fo.com/chun5060/chun5060-7jtl24c4.html在Javascript中， var a = new A();它做了如下幾件事， 創(chuàng)建一個空的對象object 把object綁定到函數(shù)A的上下文中（即A中的this現(xiàn)在指向object） 執(zhí)行函數(shù)A 返回object 所以，var a1 = new A()與var a2 = A()這兩句有著本質(zhì)的區(qū)別！
http://www.o2fo.com/kesyi/kesyi-wyx524r9.htmlJavaScript 支持情況 運(yùn)行限制 基于安全考慮，小程序中不支持動態(tài)執(zhí)行 JS 代碼，即： 不支持使用 eval 執(zhí)行 JS 代碼 不支持使用 new Function 創(chuàng)建函數(shù) 客戶端 ES6 API 支持情況 微信小程序已經(jīng)支持了絕大部分的 ES6 API，已支持的 API 如...
http://www.o2fo.com/weixinapp/weixinapp-cad838s3.htmlJavaScript 頁面類 * [I. 代碼實現(xiàn)](/secguide/secguide-yj8r3fky.html) + [1.1 原生DOM API的安全操作](/secguide/secguide-1wo53fkz.html) + [1.2 流行框架/庫的安全操作](/secguide/secguide-cm6t3fl0.html) + [1.3 頁面重定向](/secguide/secguide-nzas3fl5.html) + [1.4 JSON...
http://www.o2fo.com/secguide/secguide-owmy3fkx.html...`link.href`、`area.href`、`input.formaction`、`button.formaction`； ```javascript // bad: 跳轉(zhuǎn)至外部可控的不可信地址 const sTargetUrl = getURLParam("target"); location.replace(sTargetUrl); // good: 白名單限定重定向地址 function validURL(sUrl) { return !!((/^(https?:\/\/)?[...
http://www.o2fo.com/secguide/secguide-nzas3fl5.html...llow](https://github.com/douglascrockford/JSON-js/blob/master/json2.js) ```javascript // bad: 直接調(diào)用eval解析json const sUserInput = getURLParam("json_val"); const jsonstr1 = `{"name":"a","company":"b","value":"${sUserInput}"}`; const json1 = eval(`(${jsonstr1})`); // good: 使用JSON.parse...
http://www.o2fo.com/secguide/secguide-iulh3fl6.html...。 - 校驗來源時，應(yīng)使用`===`判斷，禁止使用`indexOf()` ```javascript // bad: 使用indexOf校驗Origin值 window.addEventListener("message", (e) => { if (~e.origin.indexOf("https://a.qq.com")) { // ... } else { // ... } }); // good: 使用postMessage時，限定Origin，且使用=...
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