js简单的验证非空
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1 /* js验证 */ 2 $(".myform1").submit(function(){ 3 var isSub = true; 4 var isFocus = false; 5 $("input[type='text']").each(function() { 6 if($(this).val()==""){ 7 if(!isFocus) 8 { 9 $(this).focus(); 10 isFocus = true; 11 } 12 isSub=false; 13 } 14 }); 15 $("select").each(function() { 16 if($(this).val()==""){ 17 if(!isFocus) 18 { 19 $(this).focus(); 20 isFocus = true; 21 } 22 isSub=false; 23 } 24 }); 25 $("textarea").each(function() { 26 if($(this).val()=="") { 27 if(!isFocus) 28 { 29 $(this).focus(); 30 isFocus = true; 31 } 32 isSub=false; 33 } 34 }); 35 if(!isSub) 36 { 37 alert("以上输入框均不能为空!"); 38 return false; 39 }else 40 { 41 return true; 42 } 43 });