[英]forEach loop on an array of objects
我一直在尝试通过所有 for 循环将其获取到 go,但它总是说数组 .. textLines/messages 是未定义的,每当我尝试获取数组中的任何元素时。
我想获取整个 object 并使用 split("") 从文本中获取每个字母。 每当我查看控制台日志试图从数组中获取任何内容(甚至它的长度)时,它都说它是未定义的,但每当我只是将数组放在那里时,它都会正常显示对象数组。 我怎样才能定义数组中的元素(对象)?
function say(messages = [{text: ' ', speed: 90, pause: false, colour: ['RED//BLUE']}]){
let alphabets = [];
let textLines = messages
console.log(textLines.length)
textLines.forEach((line, i) => {
if (i < textLines.length - 1) line.text += " ";
console.log(typeof textLines[1])
line.text.split("").forEach((alphabet) => {
let span = document.createElement("span");
span.textContent = alphabet;
textContainer.appendChild(span);
alphabets.push({
span: span,
isSpace: alphabet === " " && !line.pause,
delayAfter: line.speed,
classes: line.classes || []
});
});
});
function revealLetter(list) {
let nextLetter = list.splice(0, 1)[0];
nextLetter.span.classList.add("revealed");
nextLetter.classes.forEach((c) => {
nextLetter.span.classList.add(c);
});
let delay = nextLetter.isSpace && !nextLetter.pause ? 0 : nextLetter.delayAfter;
if (list.length > 0) {
setTimeout(function () {
revealLetter(list);
}, delay); // the delay is the talking speeds
}
}
setTimeout(() => { // to start the loop
revealLetter(alphabets);
}, 600)
}
say({ // can change what's said, the colour of text, the speed its displayed and if there's a pause (4 things)
messages: [
{text: 'Literally what does that even mean???',
speed: talkingSpeeds.fast,
pause: false,
},
{text: 'Like. what?',
speed: talkingSpeeds.normal,
pause: true
},
{text: 'Stop talking.',
speed: talkingSpeeds.slow,
pause: true,
colour: ['red']
}
]
})
这个问题有两种解决方案:
或者你可以像这样发送数组 function :
说([...])
或者您可以更改您在 function 中接受的参数,例如:
function say({messages = [{text: ' ', speed: 90, pause: false, colour: ['RED//BLUE']}]}) {...}
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