在input輸入框中限制只能輸入數字
html代碼:<input type="text" class="telnum" id="fwPhoneNbr1" maxlength="15" value="" οnkeypress="isNum(event);"/>
js代碼
function isNum(e) {var k = window.event ? e.keyCode : e.which;
if(((k >= 48) && (k <= 57)) || k == 8 || k == 0){
//|| k==40 || k==41 || k==43 || k==45){//k的值分別代表()+-
}else{
if(window.event){
window.event.returnValue = false; // IE
}else{
e.preventDefault(); // webkit
}
}
}