vararray=[1,2,3];vararrayToString=array.toString();vararrayValueOf=array.valueOf();vararrayToLocalString=array.toLocaleString();console.log(arrayToString);// 1,2,3console.log(arrayValueOf);//[1, 2, 3]console.log(arrayToLocalString);//1,2,3 3 栈方法 (LIFO:last in first out) ES数...
if(Array.isArray(['time','var'])){ console.log("I'm array!"); } 常用转换方法 1 2 3 varcolors = ['red','green','white']; console.log(colors.toString());//red,green,white console.log(colors.join('-'));//red-green-white 模拟数据类型 模拟堆栈(LIFO---last in first out) 1...
first: element inserted at the beginning of array last: element inserted at the end of array. 代码语言:javascript 复制 functionappend(array,toAppend){constarrayCopy=array.slice();if(toAppend.first){arrayCopy.unshift(toAppend.first);}if(toAppend.last){arrayCopy.push(toAppend.last);}returnarray...
(){console.log(1);}functionsecond (){console.log(2);}first();second(); 正如你所料,先执行first函数,再执行second函数,控制台将输出以下内容: 代码语言:javascript 代码运行次数:0 复制 Cloud Studio代码运行 12 目前看来没什么问题,如果first()函数中含有某种无法立即执行的函数呢?例如,我们必须发送请求...
alert(colors.valueOf()) // Object ["red","blue","green"]alert(colors) // 同toString// 使用join方法输出alert(colors.join("||")) // red||blue||green 5.2.3 栈方法 LIFO-Last In First Out 后进先出 // 读取，使用索引读取，基于0 var colors = ["red","blue","green"];/...
result; protected override async Task OnAfterRenderAsync(bool firstRender) { if (firstRender) { module = await JS.InvokeAsync<IJSObjectReference>("import", "./scripts.js"); } } private async Task TriggerPrompt() => result = await Prompt("Provide text"); public async ValueTask<string?> ...
constperson = {firstName:"John", lastName:"Doe", age:46}; Try it Yourself » Array Elements Can Be Objects JavaScript variables can be objects. Arrays are special kinds of objects. Because of this, you can have variables of different types in the same Array. ...
functionPerson(first, last, age, eyecolor) { this.firstName= first; this.lastName= last; this.eyeColor= eyecolor; } Person.prototype.nationality="English"; Try it Yourself » Array Tutorials: Array Tutorial Array Const Basic Array Methods ...
Index of Array Elements We can use an array index to access the elements of the array. CodeDescription numbers[0] Accesses the first element 10. numbers[1] Accesses the second element 30. numbers[2] Accesses the third element 40. numbers[3] Accesses the fourth element 60. numbers[4] Ac...
tab('show'); // Select first tab $('#myTab a:last').tab('show'); // Select last tab $('#myTab li:eq(2) a').tab('show'); // Select third tab (0-indexed) 标记 无需写任何JavaScript代码,只需简单的为页面元素指定data-toggle="tab" 或data-toggle="pill"属性即可激活标签页或...