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我在名爲#newSkill
的輸入字段上創建了模板參考變量。在addToSkill()
方法中,我將它作爲參數傳遞,並且它工作正常。Templace參考變量未定義
但是,在chooseSkill()
方法中,我的列表項的點擊函數調用newSkill
未定義。這是爲什麼?我不明白爲什麼這兩種方法應該有所不同。我的代碼中可能存在一些明顯的錯誤,但我無法發現它。任何幫助表示讚賞。
HTML:
<li id="skillInput">
<input *ngIf="canEdit()" #newSkill type="text" class="skillInputField" placeholder="Type your skills here" (keydown.enter)="addToSkill(newSkill)"
(keyup)="findSkill($event)">
<span *ngIf="canEdit()" class="addBtn" (click)="addToSkill(newSkill)"></span>
</li>
<ul>
<li #selectedSkill class="skillItem" *ngFor="let skill of skillSearchResult" (click)="chosenSkill(selectedSkill.innerText, newSkill)">
{{skill}}
</li>
</ul>
TS:
addToSkill(newSkill: HTMLInputElement) {
console.log(newSkill);
let value = newSkill.value;
//Check for being empty, whitespace and duplicate
if (value && value.trim().length && !this.skillArray.find(x => x.name == value)) {
this._userService.addSkill({ userID: parseInt(localStorage.getItem('currentUserId')), name: value, level: "low" })
.subscribe(
result => {
if(result == true){
//success
this.skillArray.push({ userID: parseInt(localStorage.getItem('currentUserId')), name: value, level: "low" });
} else {
//faliure
}
},
err => {
console.log(err);
}
)
}
newSkill.value = '';
}
chooseSkill(selectedSkill: string, newSkill: HTMLInputElement) {
if (selectedSkill && selectedSkill.trim().length && !this.skillArray.find(x => x.name == selectedSkill)) {
console.log(selectedSkill);
this._userService.addSkill({ userID: parseInt(localStorage.getItem('currentUserId')), name: selectedSkill, level: "low" })
.subscribe(
result => {
if(result == true){
//success
this.skillArray.push({ userID: parseInt(localStorage.getItem('currentUserId')), name: selectedSkill, level: "low" });
//Remove from search result list when clicked
this.skillSearchResult.splice(this.skillSearchResult.indexOf(selectedSkill), 1);
} else {
//faliure
}
},
err => {
console.log(err);
}
)
}
// Input field empty
newSkill.value = "";
}
UPDATE:
好像在#newSkill
的* ngIf的問題。當我刪除它,它的作品。任何想法爲什麼?對我沒有任何意義。條件顯然是真的,因爲我可以在輸入中寫入。我也嘗試打印canEdit()的值,這是真的。
UPDATE 2:
我找到了解決方法。我將* ngIf更改爲[隱藏]。我仍然不知道爲什麼* ngIf在這裏不工作。
html看起來不正確。你有
然後立即開始ul。它應該是- aaa
- bbb
–