我有一個名為陣列的初始空陣列。在我的頁面中，我有幾個帶有“收件箱”類的 span 元素。我需要得到這個 span 元素的集合，然后將它們的內容收集到另一個陣列中。但是這行代碼array[i] = values1[i].innerHTML顯示錯誤Cannot read properties of undefined (reading 'innerHTML') at HTMLButtonElement.btn.onclick。我無法得到它。
btn.onclick = function() {
var values = document.getElementsByClassName("inbox")
var values1 = Array.prototype.slice.call(values);
for (i = 0; i<arrOfWords.length; i ) {
array[i] = values1[i].innerHTML
}
console.log(array)
}
uj5u.com熱心網友回復：
也許這就是你要找的？
document.querySelector("button").onclick = function() {
const array=[...document.getElementsByClassName("inbox")].map(el=>el.textContent);
// or, if you prefer pre-ES6 notation:
const arr=[].map.call(document.getElementsByClassName("inbox"),el=>el.textContent);
console.log(array);
console.log(arr)
}<span class="inbox">one</span> extra text
<span class="inbox">two</span>
<span class="inbox">three</span>
<span class="inbox">four</span> not to
<span class="inbox">five</span>
<span class="inbox">six</span>
<span class="inbox">seven</span> be collected
<span class="inbox">eight</span>
<span class="inbox">nine</span>
<span class="inbox">ten</span>
<button>go</button>轉載請註明出處，本文鏈接：https://www.uj5u.com/net/437802.html
標籤：javascript html