[英]why my nested setTimeout delay not working?
当我滚动“frame-2”元素时,我想每 300 毫秒更改一次单词。 单词每 300 毫秒更改一次,并在数组的每个单词上停止。
滚动功能有效。 每个单词的停止也有效,但延迟不是 300 毫秒,并且几乎立即更改单词。 你看到一个我没有看到的错误吗?
function interval(func, wait, times){
var interv = function(w, t){
return function(){
if(typeof t === "undefined" || t-- > 0){
setTimeout(interv, w);
try{
func.call(null);
}
catch(e){
t = 0;
throw e.toString();
}
}
};
}(wait, times);
setTimeout(interv, wait);
};
var words21 = ["communication.", "image.", "concept.", "référencement.", "stratégie.", "contenu.", "social média."];
var text21 = "repensent votre <span class='surlignement-rouge-text'>communication.</span>";
var i21;
var wi21;
function _getChangedText21() {
i21 = (i21 + 1);
if (words21[i21] != undefined) {
return text21.replace(/communication./, words21[i21]);
} else {
return text21.replace(/communication./, words21[wi21]);
wi21 = (wi21 + 1);
}
}
$(window).scroll(function() {
text21.replace(/communication./, words21[0]);
i21 = 0;
wi21 = 1;
x = 0;
var hT20 = $('#frame-2').offset().top,
hH20 = $('#frame-2').outerHeight(),
wH20 = $(window).height(),
wS20 = $(this).scrollTop();
if (wS20 > (hT20+hH20-wH20)) {
interval(function _getInterval21() {
interval(function _changeText21() {
var txt21 = _getChangedText21();
document.getElementById("changer2").innerHTML = txt21;
}, 300, 8);
selectwords21 = words21[0];
words21.shift();
words21.push(selectwords21);
}, 2000, 6);
selectwords21 = words21[0];
words21.shift();
words21.push(selectwords21);
selectwords21 = words21[0];
words21.shift();
words21.push(selectwords21);
}
});
非常感谢,BadWoo
编辑:这是一个代码笔示例: https ://codepen.io/BadWoo/pen/MWyQbPB
首先t
永远不会是"undefined"
,但它可以是undefined
。 其次,不要调用setTimeout(interv, wait)
做setTimeout(interv(), wait)
,因为 interv 返回一个函数,这就是你想要执行的。
如果您想要做的只是更改changer2
的文本,以使用轮换的单词列表代替“交流”。 您可以在几行代码中完成此操作(请参见下面的示例)。
%
setTimout
- 使用setInterval
假设我已经正确理解了您要实现的目标,这是工作代码(根据需要调整时间):
function changeWords(){ var words = ["communication.", "image.", "concept.", "référencement.", "stratégie.", "contenu.", "social média."]; var i = 1; setInterval( () => { document.querySelector('.surlignement-rouge-text').innerHTML = words[i++ % words.length]; }, 1000); } // You could call this from your scroll handler! changeWords();
.surlignement-rouge-text{ color: red }
<span id="changer2">repensent votre <span class='surlignement-rouge-text'>communication.</span></span>
还具有了解您的要求,似乎代码确实需要一个稍微复杂一些,但并不多!
var words = ["communication.", "image.", "concept.", "référencement.", "stratégie.", "contenu.", "social média."]; async function changeWords(interval){ return new Promise( resolve => { var i = 0; var timer = setInterval( () => { document.querySelector('.surlignement-rouge-text').innerHTML = words[i++]; if(i == words.length){ clearInterval(timer); resolve(); } }, interval); }); } async function cycleWords(shortInterval, longInterval, i){ await changeWords(shortInterval); document.querySelector('.surlignement-rouge-text').innerHTML = words[i % words.length]; setTimeout(() => cycleWords(shortInterval,longInterval, i+1),longInterval); } // You could call this from your scroll handler! cycleWords(300,2000,0);
.surlignement-rouge-text{ color: red }
<span id="changer2">repensent votre <span class='surlignement-rouge-text'>communication.</span></span>
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.