我知道这是一个老问题,但谷歌把我带到了这里,我不喜欢这里的答案......对于应该简单的事情来说,它们似乎真的很复杂。所以我创建了这个指令:
***** 新内容 *****
我已经使这个指令更通用,支持解析(典型的角度值)“属性”属性。
/**
* Author: Eric Ferreira <http://stackoverflow.com/users/2954747/eric-ferreira> ©2016
*
* This directive takes an attribute object or string and adds it to the element
* before compilation is done. It doesn't remove any attributes, so all
* pre-added attributes will remain.
*
* @param {Object<String, String>?} attributes - object of attributes and values
*/
.directive('attributes', function attributesDirective($compile, $parse) {
'use strict';
return {
priority: 999,
terminal: true,
restrict: 'A',
compile: function attributesCompile() {
return function attributesLink($scope, element, attributes) {
function parseAttr(key, value) {
function convertToDashes(match) {
return match[0] + '-' + match[1].toLowerCase();
}
attributes.$set(key.replace(/([a-z][A-Z])/g, convertToDashes), value !== undefined && value !== null ? value : '');
}
var passedAttributes = $parse(attributes.attributes)($scope);
if (passedAttributes !== null && passedAttributes !== undefined) {
if (typeof passedAttributes === 'object') {
for (var subkey in passedAttributes) {
parseAttr(subkey, passedAttributes[subkey]);
}
} else if (typeof passedAttributes === 'string') {
parseAttr(passedAttributes, null);
}
}
$compile(element, null, 999)($scope);
};
}
};
});
对于 OP 的用例,您可以执行以下操作:
<li ng-repeat="color in colors">
<span attributes="{'class': color.name}"></span>
</li>
或者将其用作属性指令:
<li ng-repeat="color in colors">
<span attributes="color.name"></span>
</li>
***** 结束新内容 ******
/**
* Author: Eric Ferreira <http://stackoverflow.com/users/2954747/eric-ferreira> ©2015
*
* This directive will simply take a string directive name and do a simple compilation.
* For anything more complex, more work is needed.
*/
angular.module('attributes', [])
.directive('directive', function($compile, $interpolate) {
return {
template: '',
link: function($scope, element, attributes) {
element.append($compile('<div ' + attributes.directive + '></div>')($scope));
}
};
})
;
对于这个问题的具体情况,可以稍微重写指令,使其按类将指令应用于跨度,如下所示:
angular.module('attributes', [])
.directive('directive', function($compile, $interpolate) {
return {
template: '',
link: function($scope, element, attributes) {
element.replaceWith($compile('<span class=\"' + attributes.directive + '\"></span>')($scope));
}
};
})
;
然后,您可以在任何地方使用它并动态地按名称选择指令。像这样使用它:
<li ng-repeat="color in colors">
<span directive="{{color.name}}"></span>
</li>
我故意让这个指令简单明了。您可能(并且可能会)必须重新措辞以满足您的需求。