数字检验
<input id="contractamount" name="projectList.contractamount"
onblur="check(this)" onkeyup="value=value.replace(/[^\d\.]/g,'')"
value="${projectList.contractamount}" type="text" maxlength="50">
function check(e) {
var re = /^\d+(?=\.{0,1}\d+$|$)/
if (e.value != "") {
if (!re.test(e.value)) {
alert("请输入正确的数字");
e.value = "";
e.focus();
}
}
}
空或者空格
var projectno = $("#projectno").val();
if(projectno === ""||projectno.split(" ").join("").length === 0){
$.messager.alert('错误', '工程编号不能为空!');
}