aelked
javascript获取验证码
document.querySelector('span').innerText = getCode() document.getElementById('linkbt').addEventListener('click',function(){ getCode() }) document.querySelector('button').addEventListener('click',function(){ if(document.querySelector('input').value == document.querySelector('span').innerText){ alert('验证码正确') }else{ alert('验证码失败') document.querySelector('input').value = '' getCode() } }) function getCode(){ var str = '' var arr = [1,2,3,5,6,4,7,8,9,0,'a','b','c','d','e','f'] for(var i = 0 ; i<6;i++){ var num = Math.round(Math.random()*(15-0)+0) str += arr[num] } return str }