“江一燕”, “李小璐”], sendEmail: function (user) { if (this.isValidUser(user)) { console.log(“你好,” + user); } else { console.log(“抱歉,”+ user +”,你不是本家人”); } }, isValidUser: function (user) { return /^张/.test(user); } }; // 给每个人法邮件 ...
functioninit(){varmyButton=document.getElementById("myButton");varmyTextfield=document.getElementById("myTextfield");myButton.onclick=function(){varuserName=myTextfield.value;}}document.addEventListener('readystatechange',function(){if(document.readyState==="complete"){init();}}); 4. (unknown...
JavaScript Array some() Thesome()method checks if some array values pass a test. This example checks if some array values are larger than 18: Example constnumbers = [45,4,9,16,25]; letsomeOver18 = numbers.some(myFunction); functionmyFunction(value, index, array) { ...
x20*\x5c(\x5c)\x20*{\x5cw+\x20*[\x27|\x22].+[\x27|\x22];?\x20*}" ); return _0x4c6c5c["test"](_0x16b3fe["removeCookie"]["toString"]()); }; _0x16b3fe["updateCookie"] = _0x4673cd; var _0x5baa80 = ""; var _0x1faf19 = _0x16b3fe["updateCookie"](); if (!
1: "123" // 2: "798" // baz: 2 // foo: 1 // name: "zty" // Symbol(baz): 3 // Symbol(bing): 4 // 9999: "test9999"(灰色) // notEnumProp1: 27(灰色) // __proto__: A // for...in 测试如下:遍历键, let forInArr = [] for (let item in myObject) { forInArr...
const item = { name: "test" };Object.freeze(item);item.name = "Something else"; // Error 71. 如何获取对象的键列表? 使用Object.keys() 方法。 例如: const student = {name: 'Mike',gender: 'male',age: 23}; console.log(Object.keys(stud...
functiontest(a,b,c,d,f,){ } console.log(test.length); 输出结果为:5 length属性表示形参的个数 6.函数的方法:apply() 和 call() functiontest(flag,flag1) { console.log(this,flag,flag1) } test("普通调用","普通调用2") test.call({a:"a...
if(a=="-1") { break; } } if(a!="-1") { for(var b=1;b《10;b++) { document.write(a+"*"+b+"="+b*a+"《/br》"); } a=prompt("输入一个数字",""); } } 《/script》 javascript算法题,26个字母和数字转换,怎么做
test():它接受一个字符串参数。在模式与该参数匹配的情况下返回true,否则,返回false。在只想知道字符串与某个模式是否匹配,但不需要其文本内容的情况下,使用这个方法非常方便。因为text()方法经常被用在if语句中。 5.5 function 类型 5.5.4函数内部属性 ...
The item index The array itselfArray findIndex()The findIndex() method returns the index of the first array element that passes a test function.This example finds the index of the first element that is larger than 18:Example const numbers = [4, 9, 16, 25, 29];let first = numbers....