find() indexOf() 返回要查找的元素在数组中的位置,如果没找到则返回 -1 我们首先创建了一个数组array。然后,我们使用indexOf()方法来查找数字3在数组中的位置,结果为2(索引从0开始)。接着,我们使用indexOf()方法查找数字6在数组中的位置,由于数组中没有数字6,所以返回-1。 需要注意的是,indexOf()方法只会...
选择按钮 (Convert Array)时,使用 InvokeAsync 调用convertArrayJS 函数。 调用JS 函数之后,传递的数组会转换为字符串。 该字符串会返回给组件进行显示 (text)。CallJs1.razor: razor 复制 @page "/call-js-1" @inject IJSRuntime JS <PageTitle>Call JS 1</PageTitle> Call JS Example 1 Convert Array...
find('.modal-title').text('New message to ' + recipient) modal.find('.modal-body input').val(recipient) }) Usage The modal plugin toggles your hidden content on demand, via data attributes or JavaScript. It also adds .modal-open to the to override default scrolling behavior and generat...
find('.modal-title').text('New message to ' + recipient) modal.find('.modal-body input').val(recipient) }) 用法 通过data 属性或 JavaScript 调用模态框插件,可以根据需要动态展示隐藏的内容。模态框弹出时还会为 元素添加 .modal-open 类,从而覆盖页面默认的滚动行为,并且还会自动生成一个 .modal-b...
find('.modal-title').text('New message to ' + recipient) modal.find('.modal-body input').val(recipient) }) 用法 通过data 属性或 JavaScript 调用模态框插件,可以根据需要动态展示隐藏的内容。模态框弹出时还会为 元素添加 .modal-open 类,从而覆盖页面默认的滚动行为,并且还会自动生成一个 .modal-b...
严格模式会影响当前上下文环境(context),在函数直接调用场景中,this会变为undefind,而不是上边介绍的全局对象。 img 下边举一个使用严格模式的例子: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 functionmultiply(a,b){'use strict';// enable the strict modeconsole.log(this===undefined);// => tru...
find({type: 'User'}).should.eventually.have.length(3); }); }); The latter example uses Chai as Promised for fluent promise assertions. In Mocha v3.0.0 and newer, returning a Promise and calling done() will result in an exception, as this is generally a mistake:...
An Office service that supports add-ins to interact with objects in Office client applications. 1,058 questions 1 answer Background Color of a Slide How can I get the background color of a slide or the presentation theme? I cannot find such an option in the documentation. For example, mos...
text += x +""; } Try it Yourself » Array find() Thefind()method returns the value of the first array element that passes a test function. This example finds (returns the value of ) the first element that is larger than 18: Example...
If you want to find the value of one specified cookie, you must write a JavaScript function that searches for the cookie value in the cookie string. JavaScript Cookie Example In the example to follow, we will create a cookie that stores the name of a visitor. ...