JS利用parseInt解析数字实现求和例子演示，在网页上使用JavaScript函数中的parseInt解析数字，并求和实例。
运行效果如下：
具体代码如下：
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type"
content="text/html; charset=utf-8"
/><title>用parseInt解析数字，并求和</title><style> body{font:12px/1.5 arial;text-align:center;}.f-text{width:50px;border:1px solid
#ccc;background:#f0f0f0;font-family:inherit;padding:3px;}span{color:green;padding-right:10px;font-weight:700;}strong{padding:0 10px;}</style><script type="text/javascript"> window.onload = function
(){var
aInput = document.getElementsByTagName("input");var
aSpan = document.getElementsByTagName("span")[0];var
i = 0;for
(i = 0; i < aInput.length - 1; i++){aInput[i].onkeyup = function
(){this.value = this.value.replace(/[^\d]/,"")} }aInput[2].onclick = function
(){(aInput[0].value == ""
|| aInput[1].value == "") ?alert("请输入数字！") :aSpan.innerHTML = parseInt(aInput[0].value) + parseInt(aInput[1].value);}};</script></head><body><input type="text"
class="f-text"
/><strong>+</strong><input type="text"
class="f-text"
/><strong>=</strong><span>?</span><input type="button"
value="求和"
/></body></html> |