2 lines
1.6 KiB
JavaScript
2 lines
1.6 KiB
JavaScript
function cssBlankPseudo(e,t){var n=Object(t).className,r=Object(t).attr||"blank",o=Object(t).force;try{if(e.querySelector(":blank"),!o)return}catch(e){}var a,i,s,c=(e.ownerDocument||e).defaultView;d(c.HTMLInputElement),d(c.HTMLSelectElement),d(c.HTMLTextAreaElement),a=c.HTMLOptionElement,i=Object.getOwnPropertyDescriptor(a.prototype,"selected"),s=i.set,i.set=function(t){s.apply(this,arguments);var n=e.createEvent("Event");n.initEvent("change",!0,!0),this.dispatchEvent(n)},Object.defineProperty(a.prototype,"selected",i);var l=/^(INPUT|SELECT|TEXTAREA)$/;function p(){this.value||"SELECT"===this.nodeName&&this.options[this.selectedIndex].value?(r&&this.removeAttribute(r),n&&this.classList.remove(n),this.removeAttribute("blank")):(r&&this.setAttribute("blank",r),n&&this.classList.add(n))}function d(e){var t=Object.getOwnPropertyDescriptor(e.prototype,"value"),n=t.set;t.set=function(e){n.apply(this,arguments),p.apply(this)},Object.defineProperty(e.prototype,"value",t)}Array.prototype.forEach.call(e.querySelectorAll("INPUT,SELECT,TEXTAREA"),function(e){"SELECT"===e.nodeName?e.addEventListener("change",p):e.addEventListener("input",p),p.call(e)}),new MutationObserver(function(e){e.forEach(function(e){Array.prototype.forEach.call(e.addedNodes||[],function(e){1===e.nodeType&&l.test(e.nodeName)&&("SELECT"===e.nodeName?e.addEventListener("change",p):e.addEventListener("input",p),p.call(e))}),Array.prototype.forEach.call(e.removedNodes||[],function(e){1===e.nodeType&&l.test(e.nodeName)&&("SELECT"===e.nodeName?e.removeEventListener("change",p):e.removeEventListener("input",p))})})}).observe(e,{childList:!0,subtree:!0})}
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