3 回答

TA貢獻1859條經驗 獲得超6個贊
在if
聲明中,你需要有==
而不是等于。所以在你的情況下它需要是:
if ((generateBtn.innerHTML == "GENERATE")) {
// Change Generate Button to Reset#
let generateBtn = document.getElementById("generateBtn");
generateBtn.addEventListener("click", () => {
? if ((generateBtn.innerHTML == "GENERATE")) {
? ? generateBtn.innerHTML = "RESET";
? ? generateBtn.classList.add("resetBtn-shown");
? } else {
? ? generateBtn.innerHTML = "GENERATE";
? ? generateBtn.classList.remove("resetBtn-shown");
? }
});
.generateBtn-shown {
? background-color: red;
? color: #eba341;
? font-size: 1.5rem;
? font-weight: 500;
? border-radius: 0.5rem;
? width: 10rem;
? height: 3rem;
? border: none;
}
.resetBtn-shown {
? background-color: #21b884;
? color: white;
}
<button id="generateBtn" class="generateBtn-shown">GENERATE</button>

TA貢獻1824條經驗 獲得超8個贊
// Change Generate Button to Reset#
let generateBtn = document.getElementById("generateBtn");
generateBtn.addEventListener("click", () => {
if ((generateBtn.innerHTML === "GENERATE")) { //=== instead of =
generateBtn.innerHTML = "RESET";
generateBtn.classList.add("resetBtn-shown");
} else {
generateBtn.innerHTML = "GENERATE";
generateBtn.classList.remove("resetBtn-shown");
}
});
.generateBtn-shown {
background-color: red;
color: #eba341;
font-size: 1.5rem;
font-weight: 500;
border-radius: 0.5rem;
width: 10rem;
height: 3rem;
border: none;
}
.resetBtn-shown {
background-color: #21b884;
color: white;
}
<button id="generateBtn" class="generateBtn-shown">GENERATE</button>

TA貢獻1802條經驗 獲得超5個贊
嘗試這個..
你應該使用 textContent 而不是 innerHtml .. 它會給你text來自 html 標簽 .. 使用includes方法來比較文本 ..
在谷歌上搜索:innertextvs innerhtmlvs textcontent..
let generateBtn = document.getElementById("generateBtn");
generateBtn.addEventListener("click", (e) => {
if (e.target.textContent.includes("GENERATE")) {
e.target.innerText = "RESET";
e.target.classList.add("resetBtn-shown");
} else {
e.target.innerText = "GENERATE";
e.target.classList.remove("resetBtn-shown");
}
});
.generateBtn-shown {
background-color: red;
color: #eba341;
font-size: 1.5rem;
font-weight: 500;
border-radius: 0.5rem;
width: 10rem;
height: 3rem;
border: none;
}
.resetBtn-shown {
background-color: #21b884;
color: white;
}
<button id="generateBtn" class="generateBtn-shown">GENERATE</button>
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