Angular 'keypress‘事件不提供最新的文本框值
Angular 'keypress‘事件不提供最新的文本框值
提问于 2018-06-03 01:43:27
我有这样一个场景，我希望通过调用Http REST来获取匹配的字符串，从而在每次击键时将输入框中出现的字符串发送到服务器。但它并不像我预期的那样工作，例如，假设输入框中的当前值是‘模块’，如果我在‘模块’后输入字符'e‘，我希望传递给searchDepartmentsWithName方法的值将是’模块‘，但它给出的是当前值’模块‘，而不是修改后的值’模块‘，该值被发送到服务器，并返回错误的匹配字符串。简而言之，传递给searchDepartmentsWithName方法的值始终是修改前的值。我们如何解决这个问题，或者这是做这个的正确方式吗？
searchnox.component.html
<body>
<input type="text" placeholder="enter department name here.." (keypress)="searchDepartmentsWithName($event.target.value)" class="ticketinginput" />
<div *ngFor="let department of searchResults; let i = index">
<p id="result" href="#" (click)="onClick(department)">{{ department.departmentName }}</p>
</div>
</body>searchbox.component.ts
searchDepartmentsWithName(departmentName: string) {
this.serverService.searchDepartment(departmentName).subscribe( (response) => {
console.log(response);
},
(error) => console.log(error)
);
this.prepareSearchResults();
}server.service.ts
searchDepartment(name: string) {
this.departmentList = new Array();
const url = `http://localhost:8082/request/searchDepartmentsByName/${name}`;
return this.http.get(url).map(
(response: Response) => {
const data = response.json();
for (const temp of data) {
console.log(temp);
const department: IDepartment = <IDepartment> temp;
this.departmentList.push(department);
console.log('pushing department' + department.departmentName);
}
this.departmentListEventEmitter.emit(this.departmentList);
console.log(this.departmentList.length);
}
);
}回答 1
Stack Overflow用户
回答已采纳
发布于 2018-06-03 01:45:39
你应该使用keyup而不是keypress
(keyup)="searchDepartmentsWithName($event.target.value)"页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50659566
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