android - Onkeydown failed to work on (screen touch ) -

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i have textbox default value onkeydown should cleared default value seems i'm not able fix please me on this.

this script 

$('input').keydown(function () {     this.value = ""  });  $('input').blur(function () {     if (this.value = "") {         this.value = this.title;     } });

you want use focus() not keydown() clearing default text, otherwise won't possible type in box. secondly, javascript case sensitive, should if, not if, , need use == comparison operator.

$('input').focus(function () {     this.value = ""  });  $('input').blur(function () {     if (this.value == "") {         this.value = this.title;     } });

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