js cursor positioning text box carriage return Form submission problem solution

This article describes the js cursor positioning text box carriage return form submission solution. Share to everybody for everybody reference. The specific analysis is as follows:

The json string returned by the method appears on the page when the cursor is positioned after the text box for the auxiliary lookup is entered.

The reason: When there only one text input field a form, the user agent accept in field as a request to the form accept in field as a request to the form

When there is only 1 input type="text" in form, this form will be submitted when the user presses enter.

Solution: Handle the onkeydown event of input text, and forbid the carriage return operation.

Specific code:

<p>
<input class="text text-1" type="text" name="name" 
id="notAssociateName" value="" onkeydown="enter_down(event);"/>
</p>
function enter_down(event){
 if(event.keyCode==13){
  stopDefault(event);
 }
}
function stopDefault(e) {
 // If an event object is provided, this is 1 A non IE The browser 
 if(e && e.preventDefault) {
 　　// Block default browser actions 
 　　e.preventDefault();
 } else {
 　　//IE Block the default action of the function 
 　　window.event.returnValue = false;
 }
 return false;
}

I hope this article has been helpful for your javascript programming.