Question

我正在尝试使用混合计算另一个包含我的基本字体样式的基线高度。每次我尝试编译时，都会出错。

这是一个例子。

.lineHeight(@sizeValue){
@remValue: @sizeValue;
@pxValue: (@sizeValue * 10);
line-height: ~"@{pxValue}px";
line-height: ~"@{remValue}rem";
}

.baseFont(@weight: normal, @size: 14px, @lineHeight: (.lineHeight(2.1)) {
font-family: @fontFamily;
font-size: @size;
font-weight: @weight;
line-height: @lineHeight;
}

错误是： TypeError：无法调用未定义的方法'charAt' at getLocation（/Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/parser.js:212:34）在新的LessError（/Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/parser.js:221:19） at Object.toCSS（/Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/parser.js:385:31） at /Applications/CodeKit.app/Contents/Resources/engines/less/bin/lessc:107:28 at /Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/parser.js:434:40 at /Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/parser.js:94:48 at /Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/index.js:116:17 at /Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/parser.js:434:40 at /Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/parser.js:94:48 at /Applications/CodeKit.app/Contents/Resources/engines/less/lib/less/index.js:116:17

Answer 1

从另一个的参数列表中调用mixin是没有意义的（除了在调用mixin之前你有一个额外的(的方面）。

这是我对mixin继承的尝试，它适合你的情况，但不是我见过的最优雅的LESS。重量和大小的默认值也需要在两个地方重复：

.lineHeight(@sizeValue){
    @remValue: @sizeValue;
    @pxValue: (@sizeValue * 10);
    line-height: ~"@{pxValue}px";
    line-height: ~"@{remValue}rem";
}

// Shared by both versions of baseFont, never used directly
.commonBaseFont(@weight, @size) {
    font-family: @fontFamily;
    font-size: @size;
    font-weight: @weight;
}

// baseFont called without lineHeight argument
.baseFont(@weight: normal, @size: 14px){
    .commonBaseFont(@weight, @size);
    .lineHeight(2.1)
}

// baseFont called with lineHeight argument
.baseFont(@weight: normal, @size: 14px, @lineHeight) {
    .commonBaseFont(@weight, @size);
    line-height: @lineHeight;
}

在另一个mixin中使用来自LESS的一个mixin

1 个答案: