在Spidermonkey中进行E4X过滤
|
我在SpiderMonkey中使用的是E4X，大多数语言看起来都很扎实，但是我无法进行过滤：
var xml = <root>
<person id=\"dave\">Dave</person>
<person id=\"ian\">Ian</person>
<person>John</person>
</root>
trace( xml.*.(name() == \'person\') );
trace( xml.*.(attribute(\'@id\')) );
<person id=\"dave\">Dave</person>
<person id=\"ian\">Ian</person>
<person>John</person>
<person id=\"dave\">Dave</person>
<person id=\"ian\">Ian</person>
ReferenceError: name is not defined
ReferenceError: attribute is not defined
xml.*.(trace( hasOwnProperty(\'@id\') ));
false
false
false
没有找到相关结果
已邀请:
2 个回复
徘廷
XMLList.prototype.function::filter = function(callback) { var output = new XMLList(); var length = input.length(); for(var i = 0; i < length; i++) { if(callback(input[i], i, input)) { output += input[i]; } } return output; }var xml = <root> <person id=\"dave\">Dave</person> <person id=\"ian\">Ian</person> <person>John</person> <group> <person id=\"jane\">Jane</person> <person>Sarah</person> </group> </root>// old var nodes = xml..person.( hasOwnProperty(\'@id\') ); // new var nodes = xml..person.filter( function(node){ return node.hasOwnProperty(\'@id\'); } ); <person id=\"dave\">Dave</person> <person id=\"ian\">Ian</person> <person id=\"jane\">Jane</person>峨躬坎抬焚
功能，仅对此处发布的答案进行了小幅修正：XMLList.prototype.function::filter = function(callback) { var output = new XMLList(); var input = this; var length = input.length(); for(var i = 0; i < length; i++) { //console.println(i + \", \" + input[i]); if(callback(input[i], i, input)) { //console.println(\"Yes\"); output += input[i]; } } //console.println(\'output = \' + output); return output; }