Placeholder polyfill - no jquery

placeholder.js

/**
 * @license http://opensource.org/licenses/MIT
 * Polyfill [].forEach.call using the polyfill service
 * @link https://github.com/Financial-Times/polyfill-service
 */

if(false === ('placeholder' in document.createElement('input'))){
    var inputs = document.getElementsByTagName('input');
	[].forEach.call(inputs, function(input){
		if(input.getAttribute('placeholder')){
			input.value = input.getAttribute('placeholder');
			input.onclick = function(){
				if(this.value === this.getAttribute('placeholder')){
					this.value = '';
				}
			}
			input.onblur = function(){
				if(this.value === ''){
					this.value = this.getAttribute('placeholder');
				}
			}
		}
	});
};