我尝试使用JavaScript逐个字符地显示从数组中获取的文本。我已经成功完成了阵列的一部分。我无法找到换行线并显示其余部分的方法。
var container = document.getElementById("container");
var notes = [
{scenario: 1, intro: "This is the introduction.", que: "What is the weight of ....?"},
{scenario: 2, intro: "This is the second scen.", que: "What is the second law of ...?"},
{scenario: 3, intro: "This is the third thing.", que: "What is the third law of ...?"},
];
function splTxt(txt) {
// Split string into characters
t = txt.split('');
return t
}
function terminal(cl, i) {
// Create a div element and display message
var div = document.createElement('div');
div.className = cl;
container.appendChild(div);
// Take the first element of the array
// and extract the intro string
var txt = splTxt(notes[0].intro);
var i = 0;
// Display text, character by character
var display = setInterval(function() {
div.textContent += txt[i];
if (i == (txt.length-1)) {
clearInterval(display);
}
i += 1
}, 100);
}
terminal('blueTh', 0);
显示notes[0].intro
后,我希望转到新行并显示notes[0].que
。
我试过
var txt = splTxt(notes[0].intro + '<br />' + notes[0].que);
但显然,它只显示<br />
并在同一行打印两条消息。
答案 0 :(得分:2)
您有两种选择:
插入<br />
并告诉浏览器将其解析为HTML。
您可以使用innerHTML
属性代替textContent
来执行此操作。
这将允许您使用<br />
之类的HTML内容,但是当它们应该是纯文本时,您必须转义&
,<
,>
。如果您不信任该文本,请不要这样做。
var container = document.getElementById("container");
var notes = [
{scenario: 1, intro: "This is the introduction.", que: "What is the weight of ....?"},
{scenario: 2, intro: "This is the second scen.", que: "What is the second law of ...?"},
{scenario: 3, intro: "This is the third thing.", que: "What is the third law of ...?"}
];
function terminal(cl, i) {
var div = document.createElement('div');
div.className = cl;
container.appendChild(div);
var txt = [notes[0].intro, notes[0].que].join('\n').split('');
var i = 0;
(function display() {
if(i < txt.length) {
div.innerHTML += txt[i].replace('\n', '<br />');
++i;
setTimeout(display, 100);
}
})();
}
terminal('blueTh', 0);
&#13;
<div id="container"></div>
&#13;
插入换行符并告诉浏览器正确显示它。
在HTML中,空白字符默认情况下会折叠。您可以通过将white-space
CSS属性设置为pre
,pre-wrap
或pre-line
来更改此行为。例如,white-space: pre
会保留所有空格,并且不会包装文本。
var container = document.getElementById("container");
var notes = [
{scenario: 1, intro: "This is the introduction.", que: "What is the weight of ....?"},
{scenario: 2, intro: "This is the second scen.", que: "What is the second law of ...?"},
{scenario: 3, intro: "This is the third thing.", que: "What is the third law of ...?"}
];
function terminal(cl, i) {
var div = document.createElement('div');
div.className = cl;
container.appendChild(div);
var txt = [notes[0].intro, notes[0].que].join('\n').split('');
var i = 0;
(function display() {
if(i < txt.length) {
div.textContent += txt[i];
++i;
setTimeout(display, 100);
}
})();
}
terminal('blueTh', 0);
&#13;
#container {
white-space: pre-line;
}
&#13;
<div id="container"></div>
&#13;
答案 1 :(得分:0)
insertMany
message = document.getElementById("fly").innerHTML; // $ = taking a new line
distance = 150; // pixel(s)
speed = 20; // milliseconds
var txt="",
num=0,
num4=0,
flyofle="",
flyofwi="",
flyofto="",
fly=document.getElementById("fly");
function stfly() {
for(i=0;i != message.length;i++) {
if(message.charAt(i) != "$")
txt += "<span style='position:relative;visibility:hidden;' id='n"+i+"'>"+message.charAt(i)+"<\/span>";
else
txt += "<br>";
}
fly.innerHTML = txt;
txt = "";
flyofle = fly.offsetLeft;
flyofwi = fly.offsetWidth;
flyofto = fly.offsetTop;
fly2b();
}
function fly2b() {
if(num4 != message.length) {
if(message.charAt(num4) != "$") {
var then = document.getElementById("n" + num4);
then.style.left = flyofle - then.offsetLeft + flyofwi / 2;
then.style.top = flyofto - then.offsetTop + distance;
fly3(then.id, parseInt(then.style.left), parseInt(then.style.left) / 5, parseInt(then.style.top), parseInt(then.style.top) / 5);
}
num4++;
setTimeout("fly2b()", speed);
}
}
function fly3(target,lef2,num2,top2,num3) {
if((Math.floor(top2) != 0 && Math.floor(top2) != -1) || (Math.floor(lef2) != 0 && Math.floor(lef2) != -1)) {
if(lef2 >= 0)
lef2 -= num2;
else
lef2 += num2 * -1;
if(Math.floor(lef2) != -1) {
document.getElementById(target).style.visibility = "visible";
document.getElementById(target).style.left = Math.floor(lef2);
} else {
document.getElementById(target).style.visibility = "visible";
document.getElementById(target).style.left = Math.floor(lef2 + 1);
}
if(lef2 >= 0)
top2 -= num3
else
top2 += num3 * -1;
if(Math.floor(top2) != -1)
document.getElementById(target).style.top = Math.floor(top2);
else
document.getElementById(target).style.top = Math.floor(top2 + 1);
setTimeout("fly3('"+target+"',"+lef2+","+num2+","+top2+","+num3+")",25)
}
}
stfly()