当我尝试测试角度分量时,我遇到以下错误:
运行jest测试时出错:
Can't bind to 'matMenuTriggerFor' since it isn't a known property of 'button'.
Run Code Online (Sandbox Code Playgroud)
这是我的HTML:
<button mat-button [matMenuTriggerFor]="menu">Menu</button>
<mat-menu #menu="matMenu">
<button mat-menu-item>Item 1</button>
<button mat-menu-item>Item 2</button>
</mat-menu>`
Run Code Online (Sandbox Code Playgroud)
我"@angular/material": "6.1.0",在我的package.json中使用.我也进口的所有必要的材料依赖于beforeAll块下TestBed
我也试着更改按钮的特性matMenuTriggerFor来mat-menu-trigger-for.它没用.
请建议我如何修复此测试.
我想摆脱材料步进器上的标题导航.请建议我该怎么办?我尝试设置以下css但似乎没有工作:
.mat-horizontal-stepper-header-container{display: none}
Run Code Online (Sandbox Code Playgroud)
这是步进器的stackblitz链接. https://stackblitz.com/edit/angular-material2-beta-ybbnhe?file=app%2Fapp.component.html
如何从Typescript中的给定变量检查是否有任何变量大于0?
如何重写下面的代码,使其更优雅/简洁?
checkIfNonZero():boolean{
const a=0;
const b=1;
const c=0;
const d=0;
//Regular way would be as below.
//How can this use some library instead of doing comparison for each variable
if(a>0 || b>0 || c>0 || d>0){
return true;
}
return false;
}
Run Code Online (Sandbox Code Playgroud) 我想使用 Ag-grid 将 json 数据导出到 excel。我想保持 Ag-grid 隐藏(在 UI 上不可见),只需在 UI 上使用超链接即可以 excel 格式下载数据。
列定义:
this.columnDefs = [
{headerName: "Athlete", field: "athlete", width: 150},
{headerName: "Age", field: "age", width: 90},
{headerName: "Country", field: "country", width: 120},
{headerName: "Year", field: "year", width: 90},
{headerName: "Date", field: "date", width: 110},
{headerName: "Sport", field: "sport", width: 110},
{headerName: "Gold", field: "gold", width: 100},
{headerName: "Silver", field: "silver", width: 100},
{headerName: "Bronze", field: "bronze", width: 100},
{headerName: "Total", field: "total", width: 100}
];
Run Code Online (Sandbox Code Playgroud)
数据: …
我正在寻找番石榴ValueGraph的简单示例。就像是:
class GraphNode {
String name;
String value;
// Do I need to override equals & hashcode methods here??
}
class GraphUser {
public ValueGraph<GraphNode,Double> createGraph(){
ValueGraph<GraphNode,Double> graph = ValueGraphBuilder.directed.build();
// How do I add the nodes to graph??
// How do I add the edges to graph?
}
}
Run Code Online (Sandbox Code Playgroud)
一个简单的例子将非常有帮助。
我想检测输入的文本是否在 Angular 的 onBlur 事件中发生了变化。如果是,则执行一些操作:
处理模糊的条件:
这是已建立模糊事件的代码版本的 stackblitz 链接。但即使输入未更改,它也会登录控制台:
https://stackblitz.com/edit/angular-ngmodelchange-blur-8er79o?file=app/app.component.ts
angular ×5
typescript ×2
ag-grid ×1
ag-grid-ng2 ×1
css ×1
graph ×1
guava ×1
javascript ×1
jestjs ×1
json ×1
reactjs ×1