Question

递增0.1 javascript

＆＃13;

function img1_min_w(){
 var x = document.getElementById("val_img1_l").value++;
}

＆＃13;

<input type="button" onclick="img1_min_w()" value="+">

<output id="val_img1_l">1</output>
    <p> i want incrementing by 0.1;</p>

＆＃13;

Answer 1

可能

var val = parseFloat(document.getElementById("val_img1_l").innerHTML);
document.getElementById("val_img1_l").innerHTML = parseFloat(val + 0.1).toFixed(1); 
// for 1 decimal value... change number for more

Answer 2

function addValue() {
  const ADD_VALUE = 0.1;
  let element = document.getElementById("target");
  let value = parseFloat(element.innerHTML);
  
  element.innerHTML = parseFloat(value + ADD_VALUE).toFixed(1);
}

button {
  height: 32px;
  width: 64px;
  background-color: red;
}

<div>
   <button onClick='addValue();'>Add</button>
</div>
<div id="target">1</div>

Answer 3

document.getElementById("val_img1_l").value += 0.1;

编辑：这绝对是错误的。见评论:)）

递增0.1 javascript

3 个答案: