javascript怎么强制转换成整型(2)-木庄网络博客

示例

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>数据类型转换</title>
</head>
<body>
<script>
 
    var count=10;
    println(count.toString());
 
    var boolean=true;
    println(boolean.toString());
 
    var today=new Date();
    println(today.toString());
 
    var shoppingCart=['鞋','连衣裙','皮带'];
    println(shoppingCart.toString());
 
 
    var person={};//字面量创建对象
 
    // 设置字面量对象属性
    person.name='huangshiren';
    person.age=58;
    person.appetite=3;
    person.eat=function(){
        document.write('正在吃饭');
    }
 
    println(person.toString());
 
 
    function println(a){
        document.write(a+'<br>');
    }
 
 
</script>
</body>
</html>

转换为布尔类型

Boolean(mix)函数，将任何类型的值转换为布尔值。

示例

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>数据类型转换</title>
</head>
<body>
<script>
 
    var count=10;
 
    println(Boolean(count));
    println(Boolean(0));
    println(Boolean(4<3));
    println(Boolean(null));
    println(Boolean(""));
    println(Boolean(undefined));
 
    var shoppingCart=['鞋','连衣裙','皮带'];
    println(Boolean(shoppingCart));
 
 
 
    var person={};//字面量创建对象
 
    // 设置字面量对象属性
    person.name='huangshiren';
    person.age=58;
    person.appetite=3;
    person.eat=function(){
        document.write('正在吃饭');
    }
 
    println(Boolean(person));
 
    function println(a){
        document.write(a+'<br>');
    }
 
 
</script>
</body>
</html>