117 lines
2.8 KiB
JavaScript
117 lines
2.8 KiB
JavaScript
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var _ = require('underscore'),
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select = require('cheerio-select'),
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utils = require('../utils'),
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isTag = utils.isTag;
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var find = exports.find = function(selector) {
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if (!selector) return this;
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try {
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var elem = select(selector, [].slice.call(this.children()));
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return this.make(elem);
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} catch(e) {
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return this.make([]);
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}
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};
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var parent = exports.parent = function(elem) {
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if (this[0] && this[0].parent)
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return this.make(this[0].parent);
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else
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return this;
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};
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var next = exports.next = function(elem) {
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if (!this[0]) return this;
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var nextSibling = this[0].next;
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while (nextSibling) {
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if (isTag(nextSibling)) return this.make(nextSibling);
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nextSibling = nextSibling.next;
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}
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return this;
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};
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var prev = exports.prev = function(elem) {
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if (!this[0]) return this;
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var prevSibling = this[0].prev;
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while (prevSibling) {
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if (isTag(prevSibling)) return this.make(prevSibling);
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prevSibling = prevSibling.prev;
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}
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return this;
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};
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var siblings = exports.siblings = function(elem) {
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if (!this[0]) return this;
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var self = this,
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siblings = (this.parent()) ? this.parent().children()
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: this.siblingsAndMe();
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siblings = _.filter(siblings, function(elem) {
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return (elem !== self[0] && isTag(elem));
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});
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return this.make(siblings);
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};
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var children = exports.children = function(selector) {
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var elems = _.reduce(this, function(memo, elem) {
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return memo.concat(_.filter(elem.children, isTag));
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}, []);
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if (selector === undefined) return this.make(elems);
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else if (_.isNumber(selector)) return this.make(elems[selector]);
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return this.make(elems).filter(selector);
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};
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var each = exports.each = function(fn) {
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var length = this.length,
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el, i;
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for (i = 0; i < length; ++i) {
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el = this[i];
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if (fn.call(this.make(el), i, el) === false) {
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break;
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}
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}
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return this;
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};
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var map = exports.map = function(fn) {
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return _.map(this, function(el, i) {
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return fn.call(this.make(el), i, el);
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}, this);
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};
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var filter = exports.filter = function(match) {
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var make = _.bind(this.make, this);
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return make(_.filter(this, _.isString(match) ?
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function(el) { return select(match, el)[0] === el; }
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: function(el, i) { return match.call(make(el), i, el); }
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));
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};
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var first = exports.first = function() {
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return this[0] ? this.make(this[0]) : this;
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};
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var last = exports.last = function() {
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return this[0] ? this.make(this[this.length - 1]) : this;
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};
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// Reduce the set of matched elements to the one at the specified index.
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var eq = exports.eq = function(i) {
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i = +i;
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if (i < 0) i = this.length + i;
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return this[i] ? this.make(this[i]) : this.make([]);
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};
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var slice = exports.slice = function() {
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return this.make([].slice.apply(this, arguments));
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};
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