Three-Flat Shank Black HSS Hole Saw Arbor for HSS Hole Saw

function checkSubmit() { if(document.addcontent.name.value==""){ alert("Name cannot be empty！"); document.addcontent.name.focus(); return false; } var myreg = /^1(3|4|5|7|8)\d{9}$/; if(!myreg.test(document.addcontent.tel.value)) var reg=new RegExp(/^([a-zA-Z0-9._-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/); if(!reg.test(document.addcontent.email.value)) { alert('Please enter the correct email！'); document.addcontent.email.focus(); return false; } }
/>