我已经制作了一个带有两个div的临时进度条,用css设置为一个在另一个中,以进入进度条。当我单击按钮时,我有一个按钮可以更改内部div的宽度,但按钮单击不会更改div的宽度。我确保没有错误,当我点击按钮时,Chrome浏览器中的javascript控制台没有错误。无论如何,这是我的代码:
function clickMe() {
var newExp = parseInt(document.getElementById("expHold").innerHTML);
document.getElementById("bar2").style.width = newExp + 'px';
document.getElementById("expHold").innerHTML += '+1';
document.getElementById("expHold").innerHTML = eval(document.getElementById("expHold").innerHTML);
}
#bar1 {
border: 2px solid gold;
height: 15px;
width: 100px;
background-color: blue;
border-radius: 8px;
}
#bar2 {
height: 15px;
width: 1px;
background-color: skyblue;
border-radius: 8px;
}
<div id="bar1">
<div id="bar2">
</div>
</div>
<p>
<input type="button" value="Click me" onClick="clickMe()" />
<span id="expHold" style="color:black;">1</span>
我很感激任何帮助,告诉我我做错了什么,谢谢!
答案 0 :(得分:1)
exp
,这样您就不必反复查询过程密集型的DOM。exp
变量
var exp = 0, current;
var bar1 = document.getElementById("bar1");
var bar2 = document.getElementById("bar2");
var hold = document.getElementById("expHold");
var max = bar1.clientWidth;
document.getElementById('my-button').onclick = function() {
// Don't go past the end.
if(bar2.clientWidth < max) {
current = ++exp;
hold.textContent = current;
bar2.style.width = current + 'px';
}
}
&#13;
#bar1 {
border: 2px solid gold;
height: 15px;
width: 100px;
background-color: blue;
border-radius: 8px;
}
#bar2 {
height: 15px;
width: 0px;
background-color: skyblue;
border-radius: 8px;
}
&#13;
<div id="bar1">
<div id="bar2">
</div>
</div>
<p>
<input type="button" value="Click me" id="my-button" />
<span id="expHold" style="color:black;">0</span>
&#13;