TA貢獻1946條經(jīng)驗 獲得超4個贊
parseFloat(Math.round(num3 * 100) / 100).toFixed(2);
現(xiàn)場演示
var num1 = "1";
document.getElementById('num1').innerHTML = parseFloat(Math.round(num1 * 100) / 100).toFixed(2);
var num2 = "1.341";
document.getElementById('num2').innerHTML = parseFloat(Math.round(num2 * 100) / 100).toFixed(2);
var num3 = "1.345";
document.getElementById('num3').innerHTML = parseFloat(Math.round(num3 * 100) / 100).toFixed(2);
span {
border: 1px solid #000;
margin: 5px;
padding: 5px;
}
<span id="num1"></span>
<span id="num2"></span>
<span id="num3"></span>
1.3461.35.
TA貢獻1946條經(jīng)驗 獲得超3個贊
Number(1).toFixed(2); // 1.00
Number(1.341).toFixed(2); // 1.34
Number(1.345).toFixed(2); // 1.34 NOTE: See andy's comment below.
Number(1.3450001).toFixed(2); // 1.35
document.getElementById('line1').innerHTML = Number(1).toFixed(2);
document.getElementById('line2').innerHTML = Number(1.341).toFixed(2);
document.getElementById('line3').innerHTML = Number(1.345).toFixed(2);
document.getElementById('line4').innerHTML = Number(1.3450001).toFixed(2);
<span id="line1"></span>
<br/>
<span id="line2"></span>
<br/>
<span id="line3"></span>
<br/>
<span id="line4"></span>
舉報
