Placeholder Polyfil

Placeholder polyfil

//POLYFILL PLACEHOLDERS IN IE8/9    
if (document.createElement("input").placeholder == undefined) {
    //GET ALL TEXT INPUTS
    var inp = document.querySelectorAll('input[type=text]'); 
    //LOOP THROUGH AND USE PLACEHOLDER AS VALUE
    for (i=0;i<inp.length;i++) {
        var plhTxt = inp[i].getAttribute('placeholder');
        inp[i].setAttribute('value',plhTxt);
        //SET VALUE TO BLANK ON FOCUS IF VALUE = PLACEHOLDER
        inp[i].onfocus=function(){
            if (this.value === this.getAttribute('placeholder')) {
                this.setAttribute('value', '')
            }
        };
        //SET VALUE BACK TO PLACEHOLDER TEXT IF VALUE IS BLANK
        inp[i].onblur=function(){
            if (this.value == '') {
               this.setAttribute('value', this.getAttribute('placeholder')); 
            }
        };
    }
}