仅在单击时如何将字母的颜色更改为白色,然后在不再单击时将其更改为开头。
非常感谢您的帮助。
var drum = document.querySelectorAll("button"),
i;
for (i = 0; i <= drum.length; ++i) {
var drumi = drum[i];
var drummy = drumi.addEventListener("click", function() {
this.style.color = "white";
});
}
我建议使用2个不同的事件
onmousedown
用于用户单击元素的时间onmouseup
用于用户释放鼠标按钮的时间建议的代码看起来像这样:
var drum = document.querySelectorAll("button"),
i;
for (i = 0; i <= drum.length; ++i) {
var drumi = drum[i];
drumi.addEventListener("onmousedown", function() {
this.style.color = "white";
});
drumi.addEventListener("onmouseup", function() {
this.style.color = "black"; // put the original color here
});
}
仅使用CSS:
button:active {
color: white;
}
<button>Test</button>
单击按钮时,文字先变白,然后变黑。这是您想要的吗?
JS
let clicked = true
let turnWhite = (button) => {
clicked = !clicked
clicked ? button.style.color = "white" : button.style.color = "black"
}
HTML
<button onclick="turnWhite(this)">click</button>