all files / htmlcs/lib/rules/ viewport.js

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/**
 * @file rule: viewport
 * @author nighca<nighca@live.cn>
 */
 
module.exports = {
 
    name: 'viewport',
 
    desc: '<meta name="viewport" content="..."> recommended.',
 
    lint: function (getCfg, document, reporter) {
        var head = document.querySelector('head');
        if (!head || !getCfg(head)) {
            return;
        }
 
        var viewportMeta = head.querySelector('meta[name="viewport"]');
        if (!viewportMeta) {
            reporter.warn(head.startIndex, '027', '<meta name="viewport" content="..."> recommended.');
        }
    },
 
    format: function (getCfg, document, options) {
        var head = document.querySelector('head');
        if (!head || !getCfg(head)) {
            return;
        }
 
        var viewportMeta = document.querySelector('meta[name="viewport"]');
 
        if (viewportMeta && viewportMeta.parentNode === head) {
            return;
        }
 
        if (!viewportMeta) {
            viewportMeta = document.createElement('meta');
            viewportMeta.setAttribute('name', 'viewport');
            viewportMeta.setAttribute('content', 'width=device-width,minimum-scale=1.0,maximum-scale=1.0');
        }
 
        head.appendChild(viewportMeta);
    }
 
};