Method can directly obtain the contents of the input box. Value animal symbol in js.

The code example is as follows:

& lt！ DOCTYPE？ html & gt

& lthtml & gt

& lthead & gt

& ltmeta？ charset="UTF-8 " >

< title > get the value of the input box.

& lt script? type = " text/JavaScript " & gt；

window.onload=function(){

var？ Bt = document . getelementbyid(" bt2 ")；

var？ BTT = document . getelementbyid(" Bt 1 ")；

bt.onclick=function(){

alert(Bt 1 . value)；

}

}

& lt/script & gt；

& lt/head & gt；

& ltbody & gt

Please enter the content.

& lt input? type="button "？ id="bt2 "？ Value= "get input data"? /& gt；

& lt/body & gt；

& lt/html & gt； The effect is as follows: