function getThis()( console.log(this) } getThis(); //returns Window {postMessage: ƒ, blur: ƒ, focus: ƒ, close: ƒ, frames: Window, ...} Listing 5-2Get the Current Context of a Function in the Global Scope 代码中调用函数的地方称为执行上下文。执行上下文决定了this 的值。注...
例 4.1_a <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"/> <script language=javascript> function check() { var form = document.getElementById("regForm"); if (form.user.value == "") { alert("用户名不能为空!"); } else { form.submit(); } } </scri...
on('shown.bs.modal', function () { $('#myInput').focus() }) 实例 静态实例 以下模态框包含了模态框的头、体和一组放置于底部的按钮。 × Modal title One fine body… Close Save changes <div class="modal fade" tabindex="-1" role="dialog"> <div class="modal-dialog" role="document...
Window.focus() 设置当前窗口的焦点。 Window.getComputedStyle() 获取指定元素的计算样式。计算样式指示元素的所有CSS属性的计算值。 Window.getDefaultComputedStyle() 获取指定元素的默认计算样式,忽略作者样式表。 Window.getSelection() 返回表示所选项目的选择对象。 Window.matchMedia() 返回表示指定媒体查询字符串的...
// 函数声明f();// 'web'function(){console.log('web');}; 代码语言:javascript 代码运行次数:0 运行 AI代码解释 // 函数表达式g();// Uncaught TypeError: g is not a functionvarg=function(){// 换成 let 声明也一样console.log('web');} ...
on('shown.bs.modal', function () { $('#myInput').focus() }) Examples Static example A rendered modal with header, body, and set of actions in the footer. × Modal title One fine body… Close Save changes <div class="modal fade" tabindex="-1" role="dialog"> <div class="...
on('shown.bs.modal', function () { $('#myInput').focus() }) 实例 静态实例 以下模态框包含了模态框的头、体和一组放置于底部的按钮。 × Modal title One fine body… Close Save changes Copy <div class="modal fade" tabindex="-1" role="dialog"> <div class="modal-dialog" role="...
element.nextSibling.focus(); } }; I made OTP input in React You can see this image. One line is one input and I have 6 inputs. The inputs work that is not a problem. I need when the ponent opens, the first input must be autofocus. When I use<input autofocus/>the last input ...
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.NET isn't required to read the result of a JavaScript (JS) call. JS functions return void(0)/void 0 or undefined.Provide a displayTickerAlert1 JS function. The function is called with InvokeVoidAsync and doesn't return a value: