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JS 参考手册(字母排序)

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alignContent alignItems alignSelf animation animationDelay animationDirection animationDuration animationFillMode animationIterationCount animationName animationTimingFunction animationPlayState background backgroundAttachment backgroundClip backgroundColor backgroundImage backgroundOrigin backgroundPosition backgroundRepeat backgroundSize backfaceVisibility border borderBottom borderBottomColor borderBottomLeftRadius borderBottomRightRadius borderBottomStyle borderBottomWidth borderCollapse borderColor borderImage borderImageOutset borderImageRepeat borderImageSlice borderImageSource borderImageWidth borderLeft borderLeftColor borderLeftStyle borderLeftWidth borderRadius borderRight borderRightColor borderRightStyle borderRightWidth borderSpacing borderStyle borderTop borderTopColor borderTopLeftRadius borderTopRightRadius borderTopStyle borderTopWidth borderWidth bottom boxShadow boxSizing captionSide caretColor clear clip color columnCount columnFill columnGap columnRule columnRuleColor columnRuleStyle columnRuleWidth columns columnSpan columnWidth counterIncrement counterReset cssFloat cursor direction display emptyCells filter flex flexBasis flexDirection flexFlow flexGrow flexShrink flexWrap font fontFamily fontSize fontStyle fontVariant fontWeight fontSizeAdjust height isolation justifyContent left letterSpacing lineHeight listStyle listStyleImage listStylePosition listStyleType margin marginBottom marginLeft marginRight marginTop maxHeight maxWidth minHeight minWidth objectFit objectPosition opacity order orphans outline outlineColor outlineOffset outlineStyle outlineWidth overflow overflowX overflowY padding paddingBottom paddingLeft paddingRight paddingTop pageBreakAfter pageBreakBefore pageBreakInside perspective perspectiveOrigin position quotes resize right scrollBehavior tableLayout tabSize textAlign textAlignLast textDecoration textDecorationColor textDecorationLine textDecorationStyle textIndent textOverflow textShadow textTransform top transform transformOrigin transformStyle transition transitionProperty transitionDuration transitionTimingFunction transitionDelay unicodeBidi userSelect verticalAlign visibility width wordBreak wordSpacing wordWrap widows zIndex

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HTML 对象


JavaScript 布尔 prototype 构造函数


实例

为 JavaScript 布尔值创建新方法:

Boolean.prototype.myColor = function() {
  if (this.valueOf() == true) {
    return "green";
  } else {
    return = "red";
  }
};

Create a boolean, then call myColor():

var a = true;
var b = a.myColor();
亲自试一试 »

定义和用法

prototype 是可用于所有 JavaScript 对象的全局构造函数。

Boolean.prototype 指的是全局 Boolean() 对象。

prototype 构造函数允许您向布尔值添加新的属性和方法。

构造新属性时,所有数组都将获得该属性及其值。

构造新方法时,所有数组都将获得该方法。


浏览器支持

属性
prototype Yes Yes Yes Yes Yes

语法

Boolean.prototype.name = value

相关页面

JavaScript 教程: JavaScript 布尔值

JavaScript 教程: JavaScript 对象构造函数


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