How to convert characters into numbers in javascript

Conversion method: 1. Use Number() function, syntax "Number(value)"; 2. Use parseInt() function, syntax "parseInt("value")"; 3. Use parseFloat() function , syntax "parseFloat("value")".

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

javascript converts characters into numbers

Method 1: Use the Number() function

Syntax: Number(value)

Number() can convert the parameter value into a number.

console.log(Number("1"));  //返回数值1
console.log(Number(true));  //返回数值1

Method 2: Use the parseInt() function

parseInt() can convert the value into an integer.

console.log(parseInt("123abc"));  //返回数字123
console.log(parseInt("1.73"));   //返回数字1

Method 3: Use the parseFloat() function

parseFloat() can convert the value to a floating point number.

console.log(parseFloat("1.234.5"));  //返回数值 1.234

[Recommended learning: javascript advanced tutorial]

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