js 位运算 字符转化为数字
时间: 2024-05-18 16:18:00 浏览: 61
关于js中字符串转换成数字的问题
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在JavaScript中,可以使用一元加号运算符(+)将字符串转换为数字。例如,可以使用以下代码将字符串转换为数字:
```
let str = "123";
let num = +str;
console.log(num); // 输出:123
```
另外,还可以使用parseInt()和parseFloat()函数将字符串转换为整数或浮点数。parseInt()函数将字符串转换为整数,而parseFloat()函数将字符串转换为浮点数。例如:
```
let str1 = "456";
let intNum = parseInt(str1);
console.log(intNum); // 输出:456
let str2 = "3.14";
let floatNum = parseFloat(str2);
console.log(floatNum); // 输出:3.14
```
这些方法可以帮助你在JavaScript中实现将字符转化为数字的功能。引用<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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